What does CI have to do with a mailing list for software support? Rich markup: you can use HTML in mail. I think it's silly, but you can do that. Simple patch

What does CI have to do with a mailing list for software support? Rich markup: you can use HTML in mail. I think it's silly, but you can do that. Simple patch management: that's what version control systems are for; if your vcs doesn't support email, you can't do that. If it does, you can. Edits to messages: you mean altering the past? That's a terrible idea. Issue tracking: that's what bug trackers are for. You add a link to the bug number, or, more likely, you send a mail message to the bug tracker's email interface and get a bug number back. Send more email with the bug number in the subject and it gets added as a comment to the bug.