If you are moving your email account(s) from one system to another, then MessageBunker provides the most seamless way of accomplishing this with no loss of email functionality at any time. Hereʼs how you do it:

1. Backup your existing email account(s) with MessageBunker.
2. Set up your email account(s) on your new system, and configure your mail clients to point to the new system in addition to the old, and send their outbound mail using the new system.
3. Arrange for your MX records to be changed (if necessary) to point to your new system.
4. Wait 24 hours after stage 3 to ensure that all incoming emails come into the new system.
5. Make a note of the date & time, and reconfigure MessageBunker to backup from your new system.
6. Using MessageBunker, Time Travel to the date & time you noted in step 5, and for each email account, restore to your new system. 
7. Remove the configuration in your mail clients for the old system. 
8. Remove the old email system.

This method can be particularly effective when migrating from an in-house Exchange server to a hosted Exchange or Zimbra platform as, due to the limited performance of your broadband connection, stage 1 could take several days, whereas the restore process will only take minutes from MessageBunker to your new system, thereby dramatically reducing any downtime.