Just to let you all know, moodle.org has recently been upgraded and is now running 3.0rc2.
Ah, that explains perhaps why suddenly text-based emails from Moodle forums are full of html entities, like
"Can't Read Database"
"Can't Read Database"
Sorry to hear about the problem with text-based emails, though thanks for letting us know. I have set the email format in my messaging preferences to plain text to hopefully experience the problem myself. 
I notice that Matteo has commented about the problem in MDL-29738. Please feel free to create a new issue if you think it necessary.
I notice that Matteo has commented about the problem in MDL-29738. Please feel free to create a new issue if you think it necessary.
Thanks all,
This is because of the shift to template-ised emails in 3.0.
I've pushed a fix in MDL-52126 but I haven't got any time tonight to finish the issue with testing instructions, etc.
This is nothing to do with the (deliberately) empty head section of the e-mails.
There may be a further issue with the HTML template - I'll take a look at this tomorrow if no-one else has looked into it by then.
Andrew