[Bug 748874]

[Bugzilla-mozilla-org-rolf]

the Mail Tweak plugin is the "culprit", my apologies for the noise.
I'll contact the maintainer of the plugin.

-- 
You received this bug notification because you are a member of Mozilla
Bugs, which is subscribed to Mozilla.
https://bugs.launchpad.net/bugs/748874

Title:
  plaintext domain gets HTML mail

To manage notifications about this bug go to:
https://bugs.launchpad.net/thunderbird/+bug/748874/+subscriptions