I have imported the emails of my current IMAP account into DTP3. The email database is up to date. Now I want to change my hosting provider. So, after the change I have the same email address but another hosting provider.
In order to avoid the transfer of more than 50 thousand emails from my current hosting provider to my future hosting provider by CSV import I want to delete all the emails at my current IMAP account.
What do I have to do in order to lose no email or email attachment but to use seemlessly the same DTP3 email database?