Individual users can use the mailbox migration tool within the webmail interface to import existing email and collaboration data from most third-party mail servers.
Follow these steps to use the mailbox migration tool:
1) Log into SmarterMail.
2) Click on Settings icon> Connectivity
3) Mailbox Migration> Migrate
4) The mailbox migration tool will open in a new window.
5) Choose on the account type source related or if the specification is not there may just opt to Other and click on it.
6) Replace mail.domain.com (or old server IP in case if you have pointed over the domain to us) and
firstname.lastname@example.org with your email server and your email account, then key in your old email password.
7) Click on the Start button to begin Mailbox migration.
8) Please keep the window open until the migration is done.