Via Thunderbird
- Quick and easly solution.
- Drawback: not so stable if you have thousands of emails or a huge amount of folders.
Setup any email client on your private computer. F.e. 'Thunderbird' (http://www.mozilla.org/en-US/thunderbird/) or Apple Mail.
Configure your IMATH Account.
- Copy all mails (mark all mails and choose copy) to
- a local email folder, or
- to a free email service like gmail, gmx, ... (configure that as an additional account in the email client).
- You have to do this for every folder.
Via imapsync
- Commandline tool - no GUI.
- Has to be installed locally.
- Very flexible.
- Copies Mail recursively.