Mailster v.1.6.0 does technical groundwork to support PHP 8 and move towards Joomla 4 (although not compatbile yet).
- PHP 8 compatibility
- Joomla 2.5 is no longer supported in order to prepare for the coming Joomla 4
- Fix email charset problem leading to plus letters being omitted
- Do not add mail recipients to queue when already moderated (approved) message gets approved again