Synchronize email box

As a system administrator, I would like to be able to synchronize email boxes between servers, so I can maintain multiple copes of email accounts on multiple servers automatically.

Hello.

Add feature to synchronize email box (all box in accounts or each email box) between servers.

Example:

You have already transfer account from on to another server and redirect all traffics to new server.

Next day you like to do last synchronize between first server to new one (for any case).

This feature can be used for backup, individual or for cluster (when you like to have multi servers).