- Move GenericSetup export/import support from the GenericSetup package to MailHost as a setuptools extra.
- Python 3 compatibility
- add test coverage reporting
- Use @implementer class decorator.
- Drop long-deprecated support for uuencoded emails.
- Remove HelpSys support.
- Adjust tests to pass with latest zope.sendmail versions.
- Specify detailed distribution dependencies.
- LP #642728: Fixed TypeError on nested multi part messages in MailHost.
- Released as separate package.