imapsync vs SysTools Migrator

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.

SysTools Migrator transfers mailbox and related data between cloud platforms. It handles email, contacts, calendars, documents, attachments, files, groups, and other listed mailbox data, with routes involving Microsoft 365, Google Workspace, Google Drive, OneDrive, SharePoint, Microsoft Teams, Exchange, Lotus Notes, IMAP, Domino, Zimbra, and Google Vault. Users can choose data categories and date ranges, prioritize users, and monitor progress in real time. Batch and concurrent multi-user migration, reports, and delta migration for data that arrives after an initial transfer are supported. The product runs on Linux and Windows and supports tenant-to-tenant moves. Its product page lists OAuth 2.0 authorization for Office 365, encryption, and ISO 9001:2015 and ISO 27001:2013 certifications. The free version costs nothing and migrates email for 2 user accounts. The paid version costs what you agree with the maker; its license quota is based on user accounts migrated. Free 24x7 support is advertised.