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      OST, PST, MBOX, NSF, EML, MSG
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EdbMails EDB Recovery and Migration software
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    EdbMails
    All-in-one Recovery and Migration
    • EDB Recovery and Migration
    • OST, PST, MBOX, NSF, EML, MSG
    • Office 365, Exchange Migration
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    • Google Workspace Migration
    • IMAP Migration
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    All ProductsAll Products

    EDB Recovery and Migration

    EdbMails lets you recover corrupted, damaged, and offline Exchange EDB files, convert EDB mailboxes to PST format, and directly migrate mailbox data to Office 365 and live Exchange Server.

    EDB to PST
    EDB to PST
    Recover corrupted, damaged, offline EDB files and convert Exchange EDB mailboxes to PST file format
    Public Folder to Exchange
    Public Folder to Exchange
    Migrate public folders from an Exchange offline EDB file to live Exchange Server
    EDB to Live Exchange Migration
    EDB to Live Exchange Migration
    Directly migrate offline Exchange database (EDB) files to live Exchange server
    Archive Mailbox to Office 365
    Archive Mailbox to Office 365
    Migrate archive mailboxes from offline EDB files directly to Office 365
    EDB to Office 365 Migration
    EDB to Office 365 Migration
    Directly migrate offline Exchange database (EDB) files to Office 365
    Public Folder to Office 365
    Public Folder to Office 365
    Migrate public folders from an offline Exchange EDB file to Office 365

    OST, PST, MBOX, NSF, EML, MSG Export and Migration

    EdbMails lets you to recover OST and PST files, export OST, PST, MBOX, NSF, EML, and MSG files to PST files, and directly migrate OST, PST, MBOX, and NSF mailbox data to Office 365 and live Exchange Server.

    OST Recovery and Migration
    OST Recovery and Migration
    Recover offline OST files, convert OST to PST, and migrate OST to Office 365 and Exchange Server
    PST Recovery and Migration
    PST Recovery and Migration
    Recover Outlook PST files , Export PST to PST, migrate PST to Office 365 and Exchange Server
    MBOX Export and Migration
    MBOX Export and Migration
    Export MBOX to PST, migrate MBOX to Office 365 and Exchange Server
    NSF Export and Migration
    NSF Export and Migration
    Export NSF to PST, migrate NSF to Office 365 and Exchange Server
    EML to PST Export
    EML to PST Export
    Convert EML files to Outlook PST files
    PST to MSG Export
    PST to MSG Export
    Convert Outlook PST file to MSG file format
    MSG to PST Export
    MSG to PST Export
    Export MSG files to Outlook PST files

    Office 365, Exchange Migration

    EdbMails lets you securely migrate mailboxes across Microsoft 365, Exchange, Google Workspace (G Suite), and IMAP-supported servers such as Outlook, Gmail, Zimbra, Zoho Mail, and cPanel, ensuring zero downtime.

    Office 365 Migration
    Office 365 Migration
    Migrate between Office 365 tenants, Office 365 to Exchange, Office 365 to PST, PST files to Office 365.
    Exchange Migration
    Exchange Migration
    Migrate between any Exchange Servers, Exchange to Office 365, Exchange to PST, PST files to Exchange.
    Tenant to Tenant Migration
    Tenant to Tenant Migration
    Migrate Mailboxes, Public Folders, Archive Mailboxes between Office 365 Tenants.
    Exchange to Office 365
    Exchange to Office 365
    Migrate Mailboxes, Public Folders, Archive Mailboxes from live Exchange server to Office 365.
    Office 365 to IMAP
    Office 365 to IMAP
    Migrate Office 365 to IMAP, Office 365 to Gmail, Office 365 to Outlook, Office 365 to Zoho etc.
    Exchange to IMAP
    Exchange to IMAP
    Migrate from live Exchange Server to IMAP servers such as Gmail, Outlook, and Zoho Mail.
    Public Folder to Office 365
    Public Folder to Office 365
    Migrate Public Folders between Office 365 tenants with complete folder hierarchy and mailbox data integrity.
    Exchange to PST
    Exchange to PST
    Export live Exchange Server mailboxes, public folders, and archive mailboxes to Outlook PST files.

    SharePoint, OneDrive & Microsoft Teams Migration

    EdbMails lets you migrate SharePoint sites, OneDrive data, Microsoft Teams, teams, channels, chats, permissions, and documents between Microsoft 365 tenants while maintaining the existing folder structure and data integrity.

    SharePoint Online Migration
    SharePoint Online Migration
    Migrate documents, lists, files and folders from SharePoint sites.
    OneDrive for Business Migration
    OneDrive for Business Migration
    Migrate documents, lists, files, folders, private chats from OneDrive.
    Microsoft Teams Migration
    Microsoft Teams Migration
    Migrate Teams, chats, channels, documents, files and folders etc.

    Google Workspace / G Suite Migration

    EdbMails offers secure Google Workspace migration to Office 365, Exchange, or IMAP, and export to PST covering emails, contacts, calendars and tasks.

    Google Workspace Migration
    Google Workspace Migration
    Migrate emails, calendars, contacts, tasks from Google Workspace to Google Workspace, office 365, Exchange and IMAP. Export to PST
    Google Workspace to Office 365
    Google Workspace to Office 365
    Migrate emails, calendars, contacts, tasks from Google Workspace / G Suite to Office 365
    Google Workspace to Exchange Server
    Google Workspace to Exchange Server
    Migrate emails, calendars, contacts, tasks from Google Workspace / G Suite to on-Premise Exchange Server
    Google Workspace to IMAP
    Google Workspace to IMAP
    Migrate emails, calendars, contacts, tasks from Google Workspace / G Suite to IMAP, Outlook, Zimbra, Zoho etc.
    Google Workspace to Google Workspace Migration
    Google Workspace to Google Workspace
    Migrate emails, calendars, contacts, tasks between two Google Workspace / G Suite tenants
    Google Workspace to PST
    Google Workspace to PST
    Export emails, calendars, contacts, tasks from Google Workspace / G Suite to Outlook PST files

    IMAP Migration

    EdbMails IMAP Migration tool lets you easily migrate emails from IMAP servers such as Outlook, Gmail, Zoho Mail, Zimbra, cPanel, and more. Supports IMAP to IMAP, Office 365, Exchange Server, PST, and bulk PST to IMAP migration.

    IMAP Email Backup & Migration
    IMAP Email Backup & Migration
    Backup and migrate emails from IMAP servers to PST, Office 365, and On-Premises Exchange Server
    IMAP to Office 365
    IMAP to Office 365
    Migrate emails, folders, and attachments from IMAP servers to Office 365
    IMAP to Exchange
    IMAP to Exchange
    Migrate emails, folders, and attachments from IMAP servers to on-premises Exchange Server
    IMAP to PST
    IMAP to PST
    Export emails, folders, and attachments from IMAP servers to Outlook PST files for backup
    PST to IMAP
    PST to IMAP
    Migrate emails, folders, and attachments from bulk PST files to IMAP servers

    Duplicate Remover

    EdbMails Duplicate Remover lets you easily remove duplicate items from Office 365 and Exchange Server, and from IMAP, Outlook, Gmail, Zimbra, Zoho Mail, etc., ensuring a clean and organized mailbox.

    Remove Duplicates
    Remove Duplicates
    Easily clean up your Office 365, Exchange, Outlook and IMAP accounts by removing duplicate emails.
    Remove Duplicates from Office 365
    Remove Duplicates from Office 365
    Remove duplicate emails, calendars, contacts, journal tasks, etc. from Office 365.
    Remove Duplicates from Exchange Server
    Remove Duplicates from Exchange Server
    Remove duplicate emails, calendars, contacts, journal tasks, etc. from live Exchange Server.
    Remove Duplicates from IMAP, Outlook
    Remove Duplicates from IMAP, Outlook
    Remove duplicate emails, attachments from IMAP, Outlook, Gmail, Zimbra, Zoho Mail etc.

    Exchange, SharePoint, OneDrive, Teams and Office 365 Backup

    EdbMails enables secure, automated backup and recovery for Microsoft 365 services including Exchange Online, SharePoint, OneDrive, Teams, and Live Exchange Server with complete data protection and restore flexibility.

    Office 365 Backup
    Office 365 Backup
    Incremental, Granular, Encrypted and Compressed Office 365 Mailboxes Backup
    Exchange Server Backup
    Exchange Server Backup
    Incremental, Granular, Encrypted and Compressed Exchange Mailboxes Backup
    SharePoint, OneDrive & Teams Backup
    SharePoint, OneDrive & Teams Backup
    Backup Online site collections, Team sites, Office 365 groups, all documents etc.

    EdbMails Data Recovery

    EdbMails Data Recovery Software lets you recover permanently deleted data, including photos, videos, documents, and archived files, from partitions on hard drives, SSDs, USB drives, SD cards, and external storage devices.

    EdbMails Data Recovery
    EdbMails Data Recovery
    Recover and restore permanently deleted data from hard drives, SSDs, USB drives, SD cards, and etc.
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    Request a Demo Request a Demo
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- Awards & Recognition -

Recognized by independent software platforms

Awards and recognition received across the EdbMails product range.

  • SourceForge Top Performer Winter 2025 award badge for EdbMails4.9 / 5Ratings
  • Software Suggest Highly Recommended Winter 2025 award badge for EdbMails4.9 / 5Ratings
  • SoftwareWorld Best Customer Support 2025 award badge for EdbMails4.8 / 5Ratings
  • Top Business Software High Achiever Summer 2025 award badge for EdbMails4.9 / 5Ratings
  • Slashdot Top Performer Winter 2025 award badge for EdbMails4.9 / 5Ratings
ISO/IEC 27001 & 27018Security & certification information ↗

All-in-one software to remove duplicates

 

Complete solution to remove duplicate emails

EdbMails IMAP duplicate remover is the ultimate solution to tackle duplicate emails in your mailbox, offering complete support for Office 365, Exchange servers, and all IMAP servers. The software identifies and removes duplicate emails within the folders with precision, ensuring no compromise on data integrity. By decluttering your mailbox, it helps optimize storage space and improve email performance. Whether you are dealing with duplicates in Office 365, Exchange, or any IMAP-based service, EdbMails provides a comprehensive, reliable, and efficient solution to keep your mailboxes organized and duplicate-free.

 

Remove duplicate emails from all IMAP servers

EdbMails IMAP duplicate remover removes duplicate emails from all IMAP servers, including Gmail, Yahoo Mail, Outlook.com, AOL, Zoho Mail, and Zimbra. It scans individual folders and uses advanced matching techniques, such as comparing Internet Message IDs, email body content, subject lines, date, and sender address, to accurately identify and remove duplicates. The software ensures that only true duplicates are eliminated, preserving the original data and folder structure without compromising email integrity. Using these advanced algorithms, EdbMails provides a thorough, efficient, and precise deduplication process for your mailbox.

 

One click to a clutter-free mailbox

EdbMails provides a hassle-free solution to achieve a clutter-free mailbox with just one click. Whether you’re using Office 365, Exchange, or any IMAP-enabled server, simply connect to your source server and initiate the duplicate removal process. The software offers a clear, step-by-step wizard that guides you through the entire process, making it easy to follow even for users without technical expertise. The intuitive interface ensures that you can quickly remove unwanted duplicates from your mailbox, enhancing organization and efficiency. With EdbMails, you can enjoy a cleaner, more streamlined mailbox in no time, all with minimal effort.

 

Flexible options to remove duplicate Outlook emails

EdbMails offers flexible options to remove duplicate Outlook emails, giving you full control over how duplicates are handled. You can choose from several actions for the duplicates: Move to Deleted Items, where duplicates are transferred to the Deleted Items, Bin, or Trash folder based on your IMAP settings or the email provider; Soft Delete, where duplicates are marked as deleted but remain in the folder; or Hard Delete, where items are permanently removed from the account. The software uses advanced search criteria to accurately identify duplicates, including matching the email’s Internet Message ID, body content, subject, date, and sender address.

 

Secure IMAP duplicate remover

EdbMails IMAP email duplicate remover ensures the safe and efficient removal of duplicate emails from your IMAP accounts, with a strong focus on data security. The software uses secure Microsoft APIs and SSL/TLS encryption to protect your data during the deduplication process, adhering to Microsoft's stringent protocols to maintain data integrity. It also incorporates modern authentication methods, such as OAuth 2.0 and multi-factor authentication, for added security. Certified with ISO 27001:2013 and compliant with GDPR and HIPAA, EdbMails meets global data protection standards, ensuring peace of mind while cleaning your mailbox securely.

 

Rapid and reliable Outlook duplicate remover

EdbMails Outlook Duplicate Remover is the epitome of speed and reliability for managing duplicates in your mailbox. Its advanced algorithms ensure rapid scanning and identification of duplicate items, saving you valuable time and effort. The tool’s precise detection process, combined with customizable matching criteria, guarantees accurate and error-free removal, making it exceptionally reliable. EdbMails handles duplicates with unmatched efficiency, all while preserving your essential data and optimizing your Outlook experience. Experience a seamless, clutter-free mailbox with this trusted, high-performance solution.

 

Automatic IMAP duplicate email finder

EdbMails IMAP duplicate email finder automatically scans your IMAP mailboxes to identify and remove duplicate emails with ease. The software intelligently analyzes your mailbox using advanced criteria like Internet Message ID, subject, sender, and other key elements to detect duplicate messages without requiring any manual intervention. Whether you use Gmail, Yahoo Mail, Outlook or any other IMAP server, the tool removes duplicates and cleans up your mailbox automatically, ensuring that you always have a streamlined, clutter-free email environment. This makes managing duplicates effortless, saving you both time and effort.

 

Deduplication for Outlook on any device

EdbMails Outlook duplicate email remover removes duplicate emails from any Outlook account, whether accessed on Windows, Mac, or mobile devices. Installed only on Windows, it scans and eliminates duplicates from Outlook accounts configured with Exchange, Office 365, Outlook.com, and IMAP services. It works across all devices, ensuring seamless synchronization so that any changes made on Windows are reflected on all other devices where the Outlook account is accessed. The tool is easy to use, preserves data integrity, and optimizes performance by cleaning up the inbox, saving time, space, and improving productivity without altering your original email content.

 

Deduplicate Without PST files

EdbMails Outlook duplicate remover allows you to remove duplicate emails directly from your Outlook account without the need for PST files. Unlike traditional methods that require exporting data to a PST file before deduplication, EdbMails works directly with your live Outlook account, scanning and eliminating duplicates in real-time. This means you can remove unwanted duplicates from your Inbox, Sent Items, and other folders instantly, without having to create or manage PST files. The process is straightforward, ensuring that your Outlook account remains free of duplicates and improving overall email management efficiency.

Cost-effective email duplicate remover

EdbMails offers a cost-effective IMAP email duplicate remover with competitive pricing, making it an affordable choice for both individuals and organizations. With a flexible licensing model, no hidden fees, potential discounts of up to 75%, free software upgrades, and a lifetime license, it ensures great value for money while maximizing cost-effectiveness and delivering exceptional performance.

Cost effective

24/7 free technical support

EdbMails offers 24/7 free technical support for its IMAP duplicate email remover, ensuring a smooth experience throughout the process. Our expert team is available to assist with any issues that may arise, providing prompt help via live chat or phone. This dedicated support ensures that any challenges are quickly addressed, allowing you to use the tool with confidence.

Cost effective

Key features of EdbMails Outlook duplicate email remover

 

Smart actions to remove duplicate items

EdbMails IMAP Duplicate Email Remover offers flexible actions for managing duplicates, including moving them to the ‘Deleted Items’ folder, ‘Soft Delete’ where items are marked as deleted but remain in the folder until manually expunged, or ‘Hard Delete’ which permanently removes them from your account. These options provide complete control over how you handle duplicates, ensuring your email management fits your needs.

 

Customizable search criteria

EdbMails Outlook duplicate remover allows you to refine your search by selecting criteria such as subject, sender, date, internet message ID, or body content. This customization ensures that only the duplicates matching your selected criteria are removed, enhancing the accuracy and speed of the process. By targeting specific attributes, you can avoid unnecessary deletions and keep your important emails intact, making email management more efficient and secure.

 

Deduplicate mailboxes of any size

EdbMails makes it easy to deduplicate mailboxes of any size, whether personal or for large enterprises. The tool swiftly scans through extensive mailboxes, identifying and removing duplicate emails, which helps save valuable storage space and improve email performance. With its powerful and scalable features, EdbMails ensures efficient management of even the largest mailboxes, keeping them clean and organized.

 

Free trial to identify duplicate items

EdbMails offers a free trial version that scans your mailbox and displays the total number of duplicate items. While the trial doesn't remove duplicates, it provides a clear overview of duplicates in your emails. This allows you to assess the extent of duplication in your mailbox before deciding to proceed with the full version for removal. With EdbMails free trial, you can easily evaluate the need for cleanup and make an informed decision.

 

Exclude standard and custom folders

EdbMails lets you exclude both standard and custom folders from the duplicate removal process. You can select specific folders to skip, ensuring important data remains untouched. Whether it’s default folders like Sent or custom ones, you have full control over which areas of your mailbox are scanned, allowing for an efficient cleanup while ensuring that no critical or personal emails are affected during the process.

 

Maintain email meta properties

EdbMails ensures that the meta properties of your emails, such as timestamps, sender details, and email flags, are preserved during the duplicate removal process. This guarantees that important email metadata, including read/unread status, priority flags, and other key attributes, remain intact. As a result, your email organization stays consistent, and email threads or communication history are not disrupted, even after duplicates are removed.

 

Show deduplication status

EdbMails provides a clear and real-time view of the deduplication process, showing the status of each email as it is being analyzed and processed. You can easily track the progress of duplicate removal, including the number of duplicates found and removed. This feature gives you full visibility into the status of your cleanup, ensuring you are always informed about the ongoing deduplication task and can review the results before finalizing the process.

 

Detailed report of deduplication process

EdbMails generates a comprehensive report of the deduplication process, providing detailed information on the number of duplicates found, items removed, and the folders processed. This report ensures full transparency, allowing you to track the progress and effectiveness of the deduplication. It also helps you verify that no important data was lost, giving you confidence in the cleanup process while maintaining an organized mailbox.

 

Non-destructive duplicate removal

EdbMails IMAP duplicate email remover offers a non-destructive approach to cleaning up your email account. Unlike other tools, it ensures that no data is lost during the removal process. The tool allows users to safely remove duplicates without affecting the original email content, attachments, or folder structure, providing a seamless experience. This ensures your inbox remains organized and clutter-free while preserving all essential information intact.

Steps to remove duplicate emails

Office 365 Mailbox Migration

Deduplication Planning

Plan the deduplication process by identifying the folders to scan and deciding how to handle duplicates, such as soft delete, hard delete, or moving them to deleted items. This ensures a streamlined and organized cleanup.

 
Office 365 Public Folder Migration

Prerequisites to remove duplicates

Ensure EdbMails is installed. Determine the IMAP Hostname, port number, email address, and password. For Gmail, create an app password, and ensure sufficient bandwidth for a smooth connection and operation.

 
Office 365 Archive Mailboxes migration

Remove duplicates using EdbMails

Launch EdbMails, connect to your IMAP server, and select the folders to scan. Define the removal actions and search criteria. Start the deduplication process, and EdbMails will remove duplicates from your mailbox.

 
Office 365 Shared Mailboxes Migration

Post-deduplication

After deduplication, check your mailbox. Review the deduplication report to verify the actions taken and run a final scan to confirm the cleanup. This ensures that all duplicates have been successfully removed.

 
Complete guide

- Customer Reviews -

What Customers Say About EdbMails

Real customer feedback published on G2 and other independent review platforms.

Real experiences.
Informed decisions.

Find feedback on migration,
recovery and customer support

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Customer reviews
Microsoft
Microsoft AppSource Official Microsoft Marketplace

4.9/ 5

★★★★★

641 verified ratings on Microsoft AppSource

Verified MS Publisher Verified Microsoft Publisher Read reviews Explore all reviews
Rated 5 out of 5

5.0/5

G2 logo G2
  • Ease of use 5.0  
  • Performance 4.9  
  • Customer service 4.9  

Peter K. September 5, 2025

Verified
Rated 5 out of 5

A Reliable Tool to Remove Duplicate Emails Safely

EdbMails IMAP Duplicate Removal worked exactly as we needed. It scanned our mailboxes thoroughly and identified duplicate emails with great accuracy. I liked that it gave us options to choose how duplicates should be handled, which made the process very safe and customizable. The interface is straightforward, and the cleanup was much faster than I expected.

Daniel Foster 06/22/2025

Verified
Rated 5 out of 5

A Practical Tool for Email Cleanup

Duplicate messages had built up across several of our IMAP folders over time, mostly from a period when we had overlapping sync rules between two clients. It was making it genuinely hard to find things, especially in our shared project folders. EdbMails identified and removed the duplicates accurately, and the preview before deletion meant I could confirm the selections looked right before committing. The whole cleanup took less time than I’d set aside for it, and the folders have stayed clean since. I’ve added it to our regular mailbox maintenance routine rather than treating it as a one-off fix.

Robert Mitchell 07/17/2025

Verified
Rated 5 out of 5

Useful for Keeping Mailboxes Organized

Over a couple of years of heavy email use, duplicates had quietly piled up to the point where searching for a specific conversation meant wading through multiple copies of the same thread. I tried manual cleanup a few times but it wasn’t practical at the scale we were dealing with. EdbMails scanned the mailbox quickly and surfaced the duplicates clearly, grouped in a way that made it easy to review before removing anything. I went through the settings carefully the first time to make sure I wasn’t flagging anything I needed to keep, and the results were accurate. After the cleanup, search results were noticeably cleaner and I stopped second-guessing which copy of a message was the right one.

James Cooper 08/09/2025

Verified
Rated 5 out of 5

Simplifying Duplicate Email Management

I would spend a couple of hours trying to clear duplicates manually across our mailbox folders and barely made a dent. It just wasn’t a realistic approach when the problem was spread across dozens of folders. EdbMails handled in minutes what I couldn’t finish in an afternoon. It worked across all the affected folders at once and gave me a clear summary of what it found before I confirmed the removal. The structured approach made it easy to trust the results rather than worry I was deleting something I shouldn’t. Duplicate messages had been a recurring problem for us after a server migration, and this was the first solution that actually cleared the backlog properly.

Kevin Brooks 09/21/2025

Verified
Rated 5 out of 5

A Focused Solution for Duplicate Messages

My inbox had gotten to a point where I was regularly seeing the same messages appear multiple times, which made routine tasks like archiving and searching take longer than they should. I checked that my setup was supported before running it, which only took a moment. EdbMails found and flagged the duplicates across my folders accurately, and I was able to review the list before anything was deleted. The cleanup was straightforward and I didn’t have to go through messages one by one. My mailbox has been much easier to manage since, and I wished I’d dealt with the duplicate problem sooner rather than letting it build up.

Andrew Parker 10/13/2025

Verified
Rated 5 out of 5

Helpful for Managing Large Email Collections

After a few years of active use, my IMAP mailbox had accumulated a surprising number of duplicates. mostly from periods when I was accessing the same account from multiple devices with aggressive sync settings. I started with a small test folder to make sure the settings were detecting duplicates correctly before running it across everything, and the results looked exactly right. Scaling up to the full mailbox after that felt safe rather than risky. EdbMails worked through the entire account methodically and the cleanup made a noticeable difference to how the mailbox performs. Searches return cleaner results now and the folder sizes have come down considerably, which has also improved sync speed on my mobile client.

Christopher Hayes 11/26/2025

Verified
Rated 5 out of 5

An Option for Routine Mailbox Maintenance

I would put off dealing with the duplicate problem in our mailboxes for longer than I should have because it seemed like the kind of task that would take days to do properly. EdbMails made it far more manageable than I expected. it handled the detection automatically and presented the results clearly enough that I could review and confirm without second-guessing the process. We ran it across four IMAP accounts in a single session and finished in under two hours. The mailboxes have been noticeably tidier since, and the systematic approach meant I didn’t have to make judgment calls on individual messages. It turned a task I’d been avoiding into something I’d actually do again on a regular schedule.

Brian Edwards 01/15/2026

Verified
Rated 5 out of 5

Tackling Repeated Emails More Efficiently

Managing our shared mailbox had become unnecessarily complicated because the same messages kept showing up in multiple folders, and manually checking each one wasn’t something any of us had time for. I looked at the matching criteria before running the cleanup to make sure it was identifying true duplicates rather than just similar messages, and the logic was straightforward to configure. Once I confirmed the selection looked right, the removal process was quick and accurate. We didn’t lose anything we needed and the folder structure was much cleaner afterward. It solved a problem that had been slowing down our team’s email workflow for months.

Steven Richardson 02/19/2026

Verified
Rated 5 out of 5

A Straightforward Approach to Duplicate Cleanup

The same messages were showing up repeatedly across my folders, and it had gotten to the point where I wasn’t confident I was looking at the right version of a thread when I needed to reference something. I’d tried a couple of approaches before this and neither gave me enough control over what actually got removed. With EdbMails I was able to set the cleanup criteria to match my specific mailbox setup, which made a real difference to the accuracy of the results. The duplicates were cleared without any collateral deletions, and the mailbox has been straightforward to navigate since. It was the right tool for the specific problem I had.

Jonathan Reed 03/24/2026

Verified
Rated 5 out of 5

Keeping Email Data Easier to Manage

I manage a large email account that goes back several years, and duplicates had accumulated to the point where my storage quota was getting tight and searches were returning cluttered results. I’d been putting off a proper cleanup because I didn’t have a reliable way to do it without risking deleting something I still needed. EdbMails gave me the confidence to go through with it. The duplicate detection was accurate, and the ability to review before deleting meant I wasn’t just trusting a process I couldn’t see. Storage came back down after the cleanup and searching feels usable again. It’s now something I run periodically rather than waiting for the problem to build up again.

More reviews More reviews
Rated 4.9 out of 5

4.9/5

AppSource logoMicrosoft AppSource
  • Ease of use 5.0  
  • Performance 5.0  
  • Customer service 4.9  

Yuzheng Feng August 17, 2026

Verified
Rated 4.2 out of 5

Outlook performance improved the same day we ran the cleanup

One of our users had been complaining about Outlook running slowly for weeks, and we had been troubleshooting it in the wrong direction entirely. When I finally looked at the mailbox properly, I found thousands of duplicate emails stacked across almost every folder from a synchronization issue months earlier. EdbMails scanned the IMAP account, identified over eight thousand duplicates using its precision matching algorithm, and removed them cleanly with the original emails completely untouched. The user messaged me the same afternoon to say Outlook was running normally again. That was the fastest resolution to a performance complaint I have had in a long time.

Logan Brown August 17, 2026

Verified
Rated 4.2 out of 5

Handled multiple user accounts in one session without reconnecting for each one

We had duplicate issues across six user mailboxes on a Zimbra server, all needing cleanup at the same time. EdbMails lets you connect to multiple accounts in the same session rather than finishing one, closing the tool, and starting again for the next. We processed all six accounts one after another without any reconnection steps between them. For an IT team managing a multi-user cleanup, that multi-account support in a single session saved a significant amount of repeated setup time and made the whole job feel organized rather than repetitive.

Jason Overell August 17, 2026

Verified
Rated 4.2 out of 5

Post migration duplicate cleanup that used to take days now takes an hour

Every IMAP migration we run for clients ends the same way — duplicates in the destination mailbox from multiple sync passes during the cutover period. EdbMails has become the standard tool we run immediately after every migration to clean that up. It connects to the destination IMAP account, scans every folder using subject, sender, date, and message ID matching, and flags everything that came across twice. What used to be a manual cleanup job that took most of a day now finishes in under an hour. We run it after every single migration now without exception.

Jacob Gress August 17, 2026

Verified
Rated 4.2 out of 5

The soft delete option was the only reason I felt safe running it on a client mailbox

I was cautious about running any deduplication tool on a client's Zoho Mail account without being absolutely certain about the results first. EdbMails gives you three deletion options — move to Deleted Items, soft delete marked for removal, or hard delete permanently. I chose soft delete on the first pass, reviewed everything that was flagged, confirmed it was all genuine duplicates, and then ran the hard delete. That staged approach turned what felt like a risky operation into something I could do with complete confidence. The client's Zoho mailbox went from sluggish to noticeably faster within an hour.

Jonas Schäfer August 17, 2026

Verified
Rated 4.2 out of 5

Cleaned up four years of Gmail duplicates in one sitting

We had been living with a cluttered Gmail mailbox ever since a botched IMAP sync two years ago stacked thousands of duplicates across every folder. EdbMails connected directly through OAuth 2.0 without storing credentials anywhere and scanned the entire mailbox folder by folder. The Internet Message ID matching meant it found genuine duplicates rather than just emails with similar subjects. I used soft delete first to verify the results before committing to hard delete, and everything that got flagged was legitimately a duplicate. The mailbox that opened afterward felt like a completely different account.

Shane Thompsom May 28, 2026

Verified
Rated 4.2 out of 5

Outlook actually loads noticeably faster now

I didn't expect a duplicate remover to have a visible performance impact, but it genuinely did. One of our team members had been complaining about Outlook being slow for weeks. After running EdbMails on her mailbox and clearing out several thousand duplicate emails, the difference was immediately noticeable. She messaged me the same day to say it was running smoothly again. That kind of quick visible win is hard to argue with.

Ricardo Campbell May 28, 2026

Verified
Rated 4.2 out of 5

Cleaned up after our migration without any extra manual work

Every time we run a mailbox migration, we end up with a duplicate problem on the other side. It's just part of the process. EdbMails has become the tool we run immediately after every migration now. It handles the cleanup quickly and accurately without us having to go folder by folder ourselves. It takes something that used to be a tedious post-migration task and makes it a five-minute job.

Kemar Williams May 28, 2026

Verified
Rated 4.2 out of 5

The soft delete option gave me just enough confidence to go through with it

I was nervous about permanently removing anything from a client's mailbox without being absolutely certain. The option to soft delete first, marking duplicates without removing them outright, made it easy to verify the results before committing. Once I saw exactly what was flagged, I was confident enough to do the hard delete. That flexibility made a cautious job feel much safer.

Andre Brown May 28, 2026

Verified
Rated 4.2 out of 5

Found duplicates I didn't even know were hiding in subfolders

I expected the obvious inbox duplicates to get cleared. What surprised me was how deep the scan went. Subfolders I hadn't opened in years had stacked up hundreds of duplicate emails from old sync issues. EdbMails caught all of it. The storage it freed up was more than I was expecting, and the whole mailbox just felt lighter and easier to navigate afterward.

Dwayne Johnson May 28, 2026

Verified
Rated 4.2 out of 5

Inbox went from chaotic to clean in one sitting

After a botched migration last year, my Gmail inbox had been a mess of duplicates for months. I kept putting off fixing it because I didn't know where to start. EdbMails scanned everything, showed me exactly what it found, and cleaned it all up in one go. The inbox I opened afterwards looked nothing like the one I'd been living with. Genuinely wish I had done it sooner.

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Common deduplication scenarios

Mailbox migration or restoration

When migrating from one IMAP server to another or restoring data from a backup, duplicate emails can appear due to multiple imports or syncing errors. This often happens when the same email data is re-imported or synchronized across the servers. EdbMails IMAP email duplicate remover effectively identifies and removes these duplicates, ensuring your mailbox is clean, organized, and free from redundant emails. The software makes it easy to keep your mailbox in optimal condition after such data transitions.

Synchronization errors across multiple devices

Using an IMAP account across multiple devices such as phones, laptops, and desktops often leads to synchronization issues, causing the same emails to be downloaded or marked as new multiple times, resulting in duplicates. EdbMails Outlook duplicate email remover automatically detects and removes these unwanted duplicates, ensuring a clean and organized inbox by eliminating redundant emails and improving overall email management.

Repeated Imports from backup files

Importing emails from backup files like PST, MBOX, or EML can sometimes cause duplicate emails to appear in your mailbox, especially if the same backup is restored multiple times. With EdbMails IMAP email duplicate remover, you can easily clean up these redundancies by removing duplicate messages and ensuring that only a single copy of each email remains, thereby saving storage space and keeping your mailbox organized.

IMAP to IMAP server syncing

When emails are synced between different IMAP servers, issues such as duplicate emails can arise if syncing is not managed properly. For instance, emails may be downloaded multiple times during the sync process, leading to duplicates. EdbMails Email duplicate remover ensures that emails are cleaned up across multiple IMAP accounts, whether you're syncing mail between different servers or consolidating mailboxes from multiple accounts, ensuring your mailbox remains tidy and well-organized

Enhanced search and retrieval performance

A mailbox full of duplicates can severely impact the speed and accuracy of email searches. Having multiple copies of the same email not only clutters your inbox but also makes it more difficult to locate the specific message you're looking for. By removing duplicate emails with EdbMails Outlook duplicate remover, you can significantly improve search functionality, reduce search time, and enhance overall mailbox performance, ensuring quicker retrieval of important emails when needed.

Archiving and Storage optimization

In many business environments, email archiving is essential to maintain historical records. However, duplicate emails can waste valuable storage space on the server, especially when archiving large volumes of data. EdbMails IMAP email duplicate remover helps you optimize email storage by eliminating duplicates before archiving, reducing unnecessary storage use, and ensuring the archiving process is efficient. This not only saves storage costs but also ensures that the archived data is organized and easy to access.

Reducing server quota usage

Many IMAP servers impose storage limits or quotas on user accounts. Duplicates can quickly eat up this allocated space, leading to issues with sending or receiving new emails. With EdbMails IMAP Outlook duplicate remover, you can easily remove unnecessary duplicate emails, keeping your mailbox within the set storage limits. This ensures that your mailbox remains functional, avoiding potential problems related to reaching the server’s storage quota.

Outlook-specific duplicate removal

For users accessing IMAP email accounts through Outlook, managing duplicates can be particularly challenging due to Outlook’s synchronization process. Outlook Duplicate Remover by EdbMails is specifically tailored to detect and remove duplicate emails within Outlook accounts. Whether you’re dealing with duplicates from email imports, synchronization errors, or accidental multiple downloads, EdbMails provides a seamless way to clean up your Outlook mailbox.

Fixing duplicate emails caused by filters

Email filters are designed to help you organize your inbox by sorting messages into different folders. However, sometimes these filters can inadvertently cause the same email to be copied into multiple folders, leading to duplicates. EdbMails IMAP duplicate email remover efficiently scans the selected folders and removes these duplicate emails, ensuring that your inbox and folders stay organized and clutter-free without any redundant messages.

EdbMails IMAP email duplicate remover 
features comparison

FeaturesDemo versionFull version
Selective deduplication of mailbox  
Maintain file & folder structure  
Delete duplicates within the folderFinds duplicate emails 
Remove duplicates from all IMAP sourceFinds duplicate emails 
Multiple comparison Criteria  
Safe & secure deduplication process  
Deduplication operation reports  
24/7 free tech support  
CostFree$160 for 20 users
Support for all Windows OS  

- Technical Details -

EdbMails IMAP Email Duplicate Remover Specification

Product specifications, supported platforms and system requirements.

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IMAP Email Duplicate Remover
Tool

Migrate email from Gmail, Zoho, Zimbra, cPanel and other IMAP servers

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Migrate up to 30 items per folder

About the product

Supported email platformsIMAP-compatible servers, Gmail, Yahoo Mail, Zoho Mail, Zimbra, Outlook.com, Microsoft 365, and supported Exchange environments.
Direct mailbox scanningConnects to supported live mailboxes and scans selected folders without requiring PST or OST exports.
Duplicate detectionIdentifies duplicate emails using selectable criteria such as Internet Message ID, subject, sender, date, and message body.
Flexible removal optionsMove duplicates to Deleted Items, use soft delete, or permanently remove duplicates using hard delete.
Folder selectionScan selected folders and exclude standard or custom folders from processing.
Metadata preservationDesigned to retain original email properties, such as timestamps, sender details, and flags, for messages that remain.
Large mailbox supportDesigned for personal and enterprise mailboxes
Progress trackingDisplays deduplication progress and the status of processed items.
Detailed reportsProvides information about duplicate items identified, processing results, and folders processed.
Trial versionThe free trial can scan a mailbox and display the number of duplicates found; removal requires the applicable licensed version.
Outlook compatibilityCleans supported server mailboxes accessed through Outlook. The application itself runs on Windows, and mailbox changes can synchronize to other devices.
SecurityUses supported secure connection and authentication methods; the exact method depends on the mailbox provider and account configuration.

System requirements

Operating systemWindows 11, 10, 8.1, 8, 7, and supported Windows Server editions
System architectureCompatible 32-bit or 64-bit Windows environment
Recommended processorQuad-core CPU or higher for larger mailboxes.
Minimum RAM4 GB.
Recommended RAM8 GB or more.
Disk spaceAt least 100 MB free for installation and dependencies; additional space may be needed for logs and metadata.
Network connectivityStable network access to the target IMAP, Microsoft 365, or Exchange mailbox.
Internet accessRequired for applicable authentication and license verification, and for connecting to hosted mail services.
IMAP connectionCorrect server hostname, port, and encryption settings. Common configurations use port 993 for implicit TLS or port 143 for STARTTLS, where supported by the provider.
AuthenticationValid credentials and any provider-required app password, OAuth, or modern authentication configuration.
Outlook dependencyFor direct live-mailbox deduplication, a PST/OST file is not required. Verify any Outlook dependency for the particular workflow in use.
Security configurationPermit required outbound connections and configure firewall or proxy rules as needed.

Duplicate removal requirements

Mailbox accessHave valid credentials and sufficient permissions to access and modify the mailbox.
Server informationFor IMAP accounts, prepare the hostname, port, email address, encryption settings, and required authentication details.
Gmail configurationCreate an app password if required by the account's configuration and the selected connection method.
Microsoft 365 or ExchangeEnsure the account has the required permissions and that the authentication method is supported.
Deduplication scopeIdentify the mailboxes and folders to scan, including Inbox, Sent Items, and any relevant custom folders.
Matching criteriaSelect the appropriate duplicate-matching fields, such as Message-ID, subject, sender, date, or body content.
ExclusionsExclude folders that must remain untouched, including important custom folders where appropriate.
Removal methodChoose whether duplicates should be moved to Deleted Items, soft-deleted, or permanently deleted.
Network availabilityMaintain a stable connection and account for provider throttling or mailbox access limits.
Backup and recoveryWhere possible, maintain a recoverable backup or retention mechanism before removing data, especially before using hard delete.
ValidationReview the scan results, confirm the selected criteria, and verify the final deduplication report and mailbox contents.
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Frequently asked questions

  1. Can EdbMails IMAP duplicate remover help optimize storage by removing unnecessary duplicates from my IMAP mailboxes?

    Yes, EdbMails IMAP duplicate remover can help optimize storage by removing unnecessary duplicates from your IMAP mailboxes. By identifying and removing duplicate emails, it reduces the overall size of your mailbox, freeing up valuable storage space. This helps keep your mailbox organized and more efficient, improving performance while ensuring that only essential emails are retained.

  2. Does EdbMails Outlook duplicate remover allow users to selectively remove duplicates from specific folders?

    Yes, EdbMails Outlook duplicate remover allows users to selectively remove duplicates from specific folders. You can choose the folders you want to scan for duplicates and apply the deduplication process only to those selected folders. Additionally, you can exclude both standard and custom folders from the deduplication process, giving you full control over which folders are affected and ensuring that other important folders remain untouched.

  3. How do I remove duplicate emails from my account?

    1. Choose a deduplication tool: Use a reliable duplicate email remover tool like EdbMails to help identify and remove duplicate emails efficiently.
    2. Connect to your email account: Launch the deduplication tool and connect to your email account by entering your IMAP server details (e.g., Gmail, Yahoo, Outlook, etc.).
    3. Select the mailboxes / folders: Select the folders you want to scan for duplicates, and choose the criteria for identifying duplicates, such as subject, sender, or email body.
    4. Choose how to handle duplicates: Decide whether you want to soft delete, hard delete, or move duplicates to the Deleted Items folder.
    5. Start the deduplication process: Run the deduplication process, and let the tool automatically remove duplicates based on your selected criteria.
    6. Verify the cleanup: After deduplication, review your mailbox and the deduplication report to ensure all duplicates have been removed and your mailbox is organized.
  4. How much does EdbMails email duplicate remover software cost?

     EdbMails email duplicate remover pricing details

  5. Is it safe to use email duplicate remover software?

    EdbMails ensures the safe removal of duplicate emails by using secure encryption and authentication methods to protect your data. It follows strict security standards, including GDPR and HIPAA compliance, and uses modern protection protocols like OAuth 2.0 and SSL/TLS encryption. This ensures your data stays safe while removing duplicates from your mailbox.

  6. Do I need Outlook on my computer to use this software?

    No, EdbMails IMAP duplicate email remover works independently of Outlook and can connect directly to your IMAP email accounts, such as Gmail, Outlook.com, Yahoo etc. to remove duplicates. It operates without requiring any email client software, making it easy to use with any IMAP-supported email service.

  7. Does the software modify the source mailbox after removal of duplicates from it?

    The software removes duplicates without modifying the source mailbox. EdbMails Outlook duplicate remover ensures that your original data remains intact. It only removes duplicates based on your selected criteria and allows you to choose actions like moving duplicates to deleted items folder, soft deletion, or hard deletion, without altering the original emails in your mailbox.

  8. Can I connect to multiple users accounts to remove duplicate emails?

    Yes, you can connect to multiple user accounts to remove duplicate emails using EdbMails. Simply select the option ‘Multiple (bulk) Users / Account Migration’ in the IMAP login window and download the sample CSV. Modify the CSV file with the required details, such as the hostname, port number, email address, and password, then save and upload the CSV to start the deduplication process.

  9. Can I try the software before purchasing?

    Yes, you can try the software before purchasing. EdbMails offers the free trial version that allows you to scan your mailbox and view the number of duplicate emails found. However, to remove duplicates, you will need to purchase the full version. The trial version gives you the opportunity to evaluate the software and ensure it meets your needs before making a purchase.

  10. On what criteria does EdbMails remove duplicates?

    EdbMails removes duplicates based on customizable criteria such as subject, sender, date, internet message ID, or body content. This allows you to refine your search and ensure that only the duplicates matching your selected criteria are removed. By targeting specific attributes, EdbMails enhances the accuracy and speed of the process, helping you avoid unnecessary deletions while keeping your important emails intact.

  1. Is there a separate setup for removing duplicates from Office 365, Exchange, and IMAP?

    No, there is no separate setup for removing duplicates from Office 365, Exchange, and IMAP. EdbMails uses a single setup that supports all these email platforms. You can easily connect to your Office 365, Exchange, or any IMAP account and use the same software to remove duplicates efficiently, providing a seamless experience across different email services.

  2. Is it possible to exclude certain folders from the deduplication process using EdbMails IMAP Duplicate Remover?

    Yes, EdbMails IMAP Duplicate Remover allows you to exclude certain folders from the deduplication process. You can select specific folders to scan for duplicates while excluding standard and custom folders, giving you full control over which folders are included or excluded from the cleanup process.

  3. Can I choose to permanently delete duplicate items?

    Yes, you can choose to permanently delete duplicate items using EdbMails. The software offers a ‘Hard Delete’ option, which removes duplicates permanently from your mailbox. This ensures that unwanted duplicates are completely erased, leaving only the necessary emails in your account.

  4. Where do the removed duplicates go?

    The removed duplicates can be directed to different locations depending on the action you choose. With EdbMails, you can either move the duplicates to the ‘Deleted Items’ folder, select ‘Soft Delete’, where they are marked as deleted but remain in the folder until manually removed, or choose ‘Hard Delete’ to permanently remove them from your mailbox. You have full control over where the duplicates are placed, ensuring that the process aligns with your preferred email management.

  5. Can EdbMails IMAP duplicate remover remove duplicates from all IMAP servers?

    Yes, EdbMails email duplicate remover can remove duplicates from all IMAP servers. It supports Gmail, Yahoo, Outlook.com, Zoho Mail, and others, allowing you to connect to and clean duplicates. This flexibility ensures that no matter which IMAP server you use, EdbMails can efficiently handle the deduplication process.

  6. Can EdbMails preserve original data when removing duplicates?

    Yes, EdbMails preserves the original data when removing duplicates. The software ensures that your important emails and data remain intact while only removing the duplicates based on your selected criteria. It does not alter or modify the original emails in your mailbox, providing a safe and secure way to clean up your mailbox without risking any loss of essential information.

  7. Does the demo version remove duplicate emails?

    The demo version of EdbMails only finds duplicate emails and displays the count. To remove the duplicates, you will need to purchase the full version of the software.

  8. Do I need technical knowledge to remove duplicate emails in the IMAP server?

    No, you do not need technical knowledge to remove duplicate emails from an IMAP server using EdbMails. The software is designed to be user-friendly with an intuitive interface, making it easy for anyone to use. You can simply connect to your IMAP account, select the desired folders and criteria, and let EdbMails handle the deduplication process without requiring any technical expertise.

  9. Will removing duplicate emails affect the speed of my email client?

    Yes, removing duplicate emails can improve the speed of your email client. By eliminating unnecessary duplicate emails, you reduce the overall size of your mailbox, which can enhance the performance of your email client. This can lead to faster loading times, smoother navigation, and more efficient email management.

  10. Can EdbMails IMAP duplicate remover handle large mailboxes?

    Yes, EdbMails IMAP Duplicate Remover can handle large mailboxes. It is designed to process a significant number of emails quickly, ensuring a smooth and effective deduplication process for extensive mailboxes.

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