imapsync
Summary
imapsync is an IMAP transfer tool for migrating or backing up mailbox accounts. Its command-line software performs incremental, recursive transfers, so a transfer can be stopped and resumed without creating duplicate messages. It runs on Windows, Mac OS X, and Linux, and the listed compatible providers and server software include Gmail, Office 365, Exchange, Dovecot, and Zimbra. The online service offers free mailbox syncs below 3 GB; paid access provides unlimited syncs of any size. Buyers also get a visual interface that can be installed on a Linux server, although that interface is not yet available for Windows. Staged and tenant-to-tenant moves are supported, including for Microsoft 365 and Google Workspace. The software-only plan is 72.00 EUR per once, while Imapsync + support is 144.00 EUR per once. It cannot move contacts or calendars, keep two active accounts synchronized in both directions, or transfer messages to or from a local directory.
Who it is for
It suits people moving or backing up IMAP mailboxes, including staged or tenant-to-tenant moves. It may not fit workflows that require calendar or contact migration, two-way sync, or local-directory transfers.
What is good
- Incremental transfers can be resumed without duplicate messages.
- Works with Windows, Mac OS X, and Linux.
- Supports staged and tenant-to-tenant moves.
- Free online syncs are available below 3 GB.
What to know first
- Contacts and calendar migration are not supported.
- Active two-way mailbox synchronization is not supported.
- Linux is required for the installable visual interface.
- No trial version is offered.
Verdict
imapsync focuses on transferring IMAP mailboxes, with resumable command-line transfers and an online sync option. Check its limits first if your migration also needs contacts, calendars, two-way sync, or local-directory transfers.
imapsync plans and pricing
All plansCompared on email migration software
- Free plan
- Yesimapsync.lamiral.info
- Calendar migration
- Noimapsync.lamiral.info
- Contacts migration
- Noimapsync.lamiral.info
- Tenant-to-tenant moves
- Yesimapsync.lamiral.info
- Staged migration
- Yesimapsync.lamiral.info
- Microsoft 365 support
- Yesimapsync.lamiral.info
- Google Workspace support
- Yesimapsync.lamiral.info
- IMAP support
- Yesimapsync.lamiral.info
Facts
- Purpose
- Imapsync is an IMAP transfer tool for migrating or backing up IMAP accounts.imapsync.lamiral.info · 28 Sept 2026
- Transfer behavior
- The command-line tool makes incremental and recursive transfers between mailboxes, and a transfer can be stopped and restarted without generating duplicates.imapsync.lamiral.info · 28 Sept 2026
- Online service
- The online service offers free mailbox syncs below 3 GB, while buying provides unlimited syncs of any size.imapsync.lamiral.info · 28 Sept 2026
- Supported systems
- The command-line software runs on Windows, Mac OS X, and Linux.imapsync.lamiral.info · 28 Sept 2026
- Server compatibility
- The maker lists providers and IMAP server software including Gmail, Office 365, Exchange, Dovecot, and Zimbra.imapsync.lamiral.info · 28 Sept 2026
- Self-hosting
- Buyers get a visual interface that can be installed on a Linux server; the maker says it does not work on Windows yet.imapsync.lamiral.info · 28 Sept 2026
- Not supported
- Imapsync cannot migrate contacts or calendars, maintain two-way synchronization between active accounts, or transfer messages to or from a local directory.imapsync.lamiral.info · 28 Sept 2026
- Security and privacy
- The privacy policy says the service may collect email addresses, cookies, usage data, and diagnostic information, and states it cannot guarantee absolute data security.imapsync.lamiral.info · 28 Sept 2026
- Support
- Paid professional support is provided in English by the developer, mostly by email or possibly phone or Skype, during stated office hours of 10:00–16:00 UTC.imapsync.lamiral.info · 28 Sept 2026
- Refunds and trial
- The maker says there is no trial version and offers a 30-day money-back guarantee for purchases.imapsync.lamiral.info · 28 Sept 2026
- Maker
- The site identifies Gilles Lamiral as the author and gives a postal address in Baulon, France.imapsync.lamiral.info · 28 Sept 2026
Company
- Founded
- 2001imapsync.lamiral.info · 28 Sept 2026
- Headquarters
- Baulon, Franceimapsync.lamiral.info · 28 Sept 2026
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Sources
- imapsync.lamiral.info· checked 28 Sept 2026
- imapsync.lamiral.info/X/· checked 28 Sept 2026
- imapsync.lamiral.info/S/imapservers.shtml· checked 28 Sept 2026
- imapsync.lamiral.info/S/privacy_policy.shtml· checked 28 Sept 2026