EdbMails IMAP Migration Tool vs imapsync

EdbMails IMAP Migration Tool moves email and folders between IMAP servers, and supports transfers from IMAP to Office 365, Exchange Server or PST, as well as PST to IMAP. The Windows software lists providers including Gmail, GoDaddy, Rackspace, Zoho, Zimbra, IceWarp, cPanel, Yahoo Mail and Outlook.com. Users can choose folders and subfolders and filter mail by date, sender, attachments and AND/OR conditions. The maker says it preserves metadata, headers, folder structure, formatting and language encoding. Multiple mailboxes can be loaded from CSV, and separate installations can run migrations in parallel. Outlook is not required for IMAP-to-IMAP migration or Exchange-to-Office 365 moves. The maker says data and credentials are not stored on its servers and lists OAuth 2.0, TLS, AES 256-bit encryption for locally stored incremental-migration metadata and MFA support. A free trial is available, limited to 30 items from each folder. One-time plans cost 200.00 USD for 100 mailboxes, 299.00 USD for 1000 mailboxes, or 499.00 USD for unlimited mailboxes.

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.