Office 365 Migration User Manual

Overview

EdbMails Office 365 Migration tool handles direct migration of mailboxes between Microsoft 365 tenants, from Office 365 to on-premises Exchange servers, and across hosted Exchange environments and legacy platforms such as Small Business Server. The same tool also covers PST export, public folder migration, archive mailbox migration, and shared mailbox migration, so there's no need to switch between separate applications.

Migration jobs are configured through the application's main interface, where you can apply filters and set up parallel migration to move several mailboxes at once. Incremental migration then takes over on repeat runs, picking up only new or changed items so nothing gets duplicated. None of this requires writing a single script or touching PowerShell. Installation is straightforward, with no agents required on the source or target servers.

Who is this tool for?

Not everyone who needs to migrate a mailbox works in IT. Some are small business owners switching providers, individuals moving away from a hosted account, or consultants handling a one-off tenant move for a client. EdbMails works for all of them, since the interface is straightforward enough that you don't need a technical background to get through a migration successfully.

The tool scales just as well for larger teams. IT administrators and system engineers running tenant-to-tenant migrations or Exchange-to-cloud transitions will appreciate the automation. Auto-mapping, incremental migration, throttling management, and automatic mailbox creation take most of the manual work off the table when you're dealing with hundreds or thousands of mailboxes.

MSPs will find the per-mailbox licensing model just as practical, since you pay for what you migrate rather than for seats or platform subscriptions that sit idle between jobs.

The tool supports all Microsoft 365 plans and Exchange versions, including hosted providers like Rackspace, GoDaddy, and Intermedia. Global admins can connect through Auto Registration, while delegated users and those without full admin rights can use Manual Registration with a full-access account instead.

How the tool works

EdbMails connects directly to both your source and target environments. Once connected, it reads the source mailbox contents and writes them to the target in a single hop, with no intermediary server, no third-party storage, and no staging environment in between.

Mailboxes are matched automatically based on display name, email address, first name, and last name. If the automatic mapping doesn't cover everything, you can load a CSV file with custom mappings, including cross-language folder name mappings.

Authorization to Microsoft 365 uses OAuth 2.0. Your credentials are passed directly to Microsoft's sign-in page, and EdbMails never handles or stores them.