Imapsync. IMAP migration
Operating systems : Linux
Migrating an IMAP account from one IMAP server to another [ 1 ] / Linux, command line:
imapsync --host1 imap.this.com --user1 email@example.com --passfile1 /home/user/imap/passwordfile1 --ssl1 --host2 imap.another.com --user2 firstname.lastname@example.org --passfile2 /home/user/imap/passwordfile2 --ssl2 --skipsize --allowsizemismatch
- There is a web site (example.com) and an email box (email@example.com) hosted at a web hosting company. The IMAP server: imap.this.com. The IMAP server supports SSL.
- The example.com web site is to be transfered to another web hosting company. So is the firstname.lastname@example.org box with all its contents and keeping its folders structure. The IMAP server of another web hosting company: imap.another.com. The IMAP server supports SSL.
1. Set up an email box named email@example.com and a password to it on the server of the web hosting company the firstname.lastname@example.org mailbox is to be transfered to - from the previous web hosting company.
2. Create two text files in /home/user/imap/: passwordfile1 with the password for the mailbox on the first IMAP server and passwordfile2 with the password for the mailbox on the second IMAP server.
3. chmod 600 /home/user/imap/passwordfile1
4. chmod 600 /home/user/imap/passwordfile2
5. Install imapsync
6. Run imapsync
Imapsync transfers a mailbox - keeping its folders structure - from imap.this.com to imap.another.com. SSL is used to enable encryption and passwords are saved to protected files (chmod 600).
Migration between two email service boxes may happen to require to make use of more imapsync options [ 2 ]. Like transfering contents of one Gmail.com box to another demands to have "--port1" and "--port2" specified:
imapsync --host1 imap.gmail.com --port1 993 --user1 email@example.com --passfile1 /home/user/imap/passwordfile1 --ssl1 --host2 imap.gmail.com --port2 993 --user2 firstname.lastname@example.org --passfile2 /home/user/imap/passwordfile2 --ssl2 --skipsize --allowsizemismatch
A simple and common case: contents of one email box are transfered to another, empty mailbox. But there can be more complicated ones like: Gmail to Google Apps Email Migration and Moving to Google Apps with imapsync.
For more command options: Migrate mail from one server to another with imapsync and imapsync(1) - Linux man page.
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