"There are lots of open wishes for KMail 1 which is out of maintenance. These wishes have to be checked. If they are still valid for KMail 2, the "product" field in bugzilla should be changed to KMail 2. Wishes that are no longer valid (for example because they have been implemented/fixed) should be closed.
Note: coordinate with the KMail developers to get write access to the KMail 1 bugreports.
Prerequisites: A system with latest KDE and KMail installed. Having used KMail before is an advantage."