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SPECIFICTION
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imapsync

imapsync.lamiral.info

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What it is

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.

Spec sheet

Purpose
Imapsync is an IMAP transfer tool for migrating or backing up IMAP accounts.Read 28 Sep 2026 · imapsync.lamiral.info
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.Read 28 Sep 2026 · imapsync.lamiral.info
Headquarters
Baulon, FranceRead 28 Sep 2026 · imapsync.lamiral.info
Founded
2001Read 28 Sep 2026 · imapsync.lamiral.info
Maker
The site identifies Gilles Lamiral as the author and gives a postal address in Baulon, France.Read 28 Sep 2026 · imapsync.lamiral.info
Not supported
Imapsync cannot migrate contacts or calendars, maintain two-way synchronization between active accounts, or transfer messages to or from a local directory.Read 28 Sep 2026 · imapsync.lamiral.info
Online service
The online service offers free mailbox syncs below 3 GB, while buying provides unlimited syncs of any size.Read 28 Sep 2026 · imapsync.lamiral.info
Refunds and trial
The maker says there is no trial version and offers a 30-day money-back guarantee for purchases.Read 28 Sep 2026 · imapsync.lamiral.info
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.Read 28 Sep 2026 · imapsync.lamiral.info
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.Read 28 Sep 2026 · imapsync.lamiral.info
Server compatibility
The maker lists providers and IMAP server software including Gmail, Office 365, Exchange, Dovecot, and Zimbra.Read 28 Sep 2026 · imapsync.lamiral.info
Supported systems
The command-line software runs on Windows, Mac OS X, and Linux.Read 28 Sep 2026 · imapsync.lamiral.info
Transfer behavior
The command-line tool makes incremental and recursive transfers between mailboxes, and a transfer can be stopped and restarted without generating duplicates.Read 28 Sep 2026 · imapsync.lamiral.info

Plans and prices

Software only €72, paid once One-time payment Windows, Linux, Mac OS X · Lifetime updates · Unlimited use Read 28 Sep 2026 · imapsync.lamiral.info
Imapsync + support €144, paid once One-time payment Software · Professional support · Unlimited online syncs · Lifetime updates Read 28 Sep 2026 · imapsync.lamiral.info
Professional support €144, paid once One-time payment Support from the developer for migration work Read 28 Sep 2026 · imapsync.lamiral.info

Every imapsync plan and price →

Strong points and limits

Strong points

  • Incremental transfers can be stopped and resumed.
  • Runs on Windows, Mac OS X, and Linux.
  • Supports staged and tenant-to-tenant moves.
  • Free online syncs are available below 3 GB.

Limits

  • Does not migrate contacts or calendars.
  • Cannot keep active accounts synchronized both ways.
  • No trial version is offered.
  • Linux server interface does not work on Windows.

Who it suits

It suits administrators or organizations moving or backing up IMAP mailboxes, including staged or tenant-to-tenant moves. Buyers needing contacts, calendars or ongoing two-way synchronization should look elsewhere.

Verdict

imapsync is focused on mailbox transfers, with resumable incremental operation and broad listed IMAP compatibility. Its clear limitations include calendars, contacts and two-way synchronization; software-only pricing is €72, paid once.

Where Specifiction places it

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