What is IMAP email migration and what is it for?
When you change hosting or domain, the biggest risk is losing years of accumulated email. This tool copies everything between two IMAP servers one-to-one, preserving all folders, read/unread status, dates and attachments. You watch each account's progress live as a percentage. Nothing on the source server is touched; your old account stays exactly as it is until the migration finishes.
Frequently Asked Questions
- Enter the source server's IMAP address, port and security type.
- Fill in the destination server details the same way.
- Add the usernames and passwords of the accounts to migrate; you can queue several accounts at once.
- Press Start and follow the progress live.
- When it finishes, verify by comparing folder counts and the latest emails on the new server.
No. The migration works by copying; nothing in the source account is deleted or changed. We recommend keeping the old account open for a while after migrating.
No. The credentials you enter are used only for the duration of the transfer and are deleted from the server when it finishes.
No. Messages already on the destination are skipped; only missing ones are copied. You can rerun an interrupted migration to continue where it left off.
It depends on mailbox size and server speed. An account of a few GB usually completes in 15-60 minutes; many small emails take longer than a few large attachments.
No. The IMAP protocol covers only email folders. Calendar and contact records must be transferred separately via CalDAV/CardDAV.