Your e-mail will work like usual during the migration but if you are using an e-mail client like Microsoft Outlook, Windows Mail, Apple Mail or Mozilla Thunderbird you will need to change your server addresses.
The new server addresses are:
Incomming Server Address (IMAP): imap01.servage.net
Incomming Server Address (POP): pop01.servage.net
Outgoing Server Address (SMTP): smtp01.servage.net
More info about the mailservices can be found HERE
If you don't know how to change your server address in your e-mail client please have look at our support documents here or contact our support to have them help you.