Qboxmail Migrations are an advanced tool that allows you to move email messages from any provider or dedicated server that supports the IMAP protocol.
When the migration is complete you will receive an alert message so you will know when it is time to change the MX records of the domain. You can schedule a second migration, following the change of MX records, to get back the messages received from the old server during the DNS update phase.
You can also transfer messages from Gmail, Office 365 and Exchange. Move via Master User and OAuth 2.0 is also available so as not to have to know the password of all the mailboxes you want migrate.