Using mail isn't a good solution, and neither is PHPMailer. Registration mails should have 100% reliability. You have to think about the target audience of MapleBit. This site aims for the "one size fits all" mantra, meaning that
anyone can set it up, on any machine. Enabling and configuring mail can be a pain. If mail becomes a vital component to completing registrations, there is a very big chance that some sites may not send the email at all, which would keep people from using MapleBit.
The proper way to handle mailing would be to use a 3rd party service, such as Mandrill or Mailgun, and there's no way I would ever consider forcing people to use those services.
That being said, MapleBit is open source, so you may fork it and add your mail tweaks in.
Edit 8/2/15:
- Closed tickets can no longer have new comments added.
- Closed tickets now show that they have been closed on the User Control Panel side. (thanks @
maplefreak26)