Also new in MailNow! 5.1 is Priority Migration, a few that allows you to migrate your mails from any server. Using IMAP, it will allow you to start using MailNow! in a matter of minutes because it will migrate the most recent mails from your old server first. This way you will be able to access the mails that you probably need most straight away. And then Priority Migration will quietly continue migrating your older mails in the background. Painless migration with 0 downtime!