imapsync vs MailJerry

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.

MailJerry is a cloud tool for moving email data directly between providers. It transfers messages, folders, drafts, labels, and sent objects, and says it works with all IMAP providers; named services include Gmail, Microsoft 365, Exchange, Yahoo, GMX, and iCloud. Bulk migration can handle multiple mailboxes, with CSV upload available on paid plans. Paid features can synchronize mailboxes, transfer new messages automatically, or back up email on daily, weekly, or monthly schedules. Controls include date-range filtering, bandwidth throttling, migration status details, and automatic reconnection after a server interruption. MailJerry says email data is encrypted, message contents are not readable by the tool, and messages are not stored. It states that its migration tool complies with GDPR. The free plan allows unlimited mailboxes but caps each at 150 MB and concurrent migrations at three; it excludes auto-sync, backup, bulk migration, CSV upload, and date filtering. The monthly plan is $14.90 a month, and the yearly plan is $129.90 a year; both include VAT. Calendar and contact migration are not supported.