imapsync vs Priasoft Migration Suite for Exchange

imapsync is an IMAP transfer tool for migrating or backing up mailbox accounts. Its command-line software makes incremental, recursive transfers, and a stopped transfer can be restarted without generating duplicates. The software runs on Windows, Mac OS X and Linux, with listed compatibility including Gmail, Office 365, Exchange, Dovecot and Zimbra. The online service offers free mailbox syncs below 3 GB; buying provides unlimited syncs of any size. Buyers also receive a visual interface for installation on a Linux server, though that interface does not yet work on Windows. Staged and tenant-to-tenant moves are supported, including for Microsoft 365 and Google Workspace. The software-only plan is €72 as a one-time purchase; professional support is €144, paid once, as is the Imapsync + support plan. There is no trial version, and purchases carry a 30-day money-back guarantee. The tool cannot migrate contacts or calendars, maintain two-way synchronization between active accounts, or transfer messages to or from a local directory.

Priasoft Migration Suite for Exchange moves Exchange mailboxes between Exchange environments and to Office 365, also called Exchange Online. Listed source versions include Exchange 5.5, 2000, 2003, 2007, 2010, 2013, 2016, and 2019, with some same-forest scenarios dependent on Microsoft mixed-mode support. The suite supports repeatable dry runs that use the same operations while isolating target objects before production. Migration runs on the wire without first copying data through a temporary file. It can capture mailbox folder delegate details and restore resolved permissions in the target environment. Outlook profile update technology supports standard and RPC over HTTP profiles and cached-mode adjustments, while MAPI/HTTP is listed for Office 365 connections. Calendar and contact migration, tenant-to-tenant moves, staged migration, and Microsoft 365 support are listed capabilities. The product runs on Windows and can be self-hosted. A valid license is required to migrate objects, with licensing metered by processed objects; an evaluation license is available by request. Pricing is on request, and a free trial is advertised.