Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Is there a way to edit the subject line of emails you've received in Thunderbird? I use email a lot for work and it would be a lot easier if I could change subjects to make things easier to find later.

I found a plug-in but it only works for Thunderbird up to 2.0 and I'd rather not have to downgrade to get this feature.

share|improve this question
I hate that most of my colleagues send blank-subject emails 99% of the time. – Draemon Feb 19 '10 at 20:46
up vote 2 down vote accepted

Move the message to Drafts, edit Subject, move message back.

share|improve this answer
that replaced the original sender with oneself and updates the message date though... – Tobias Kienzler Nov 15 '11 at 12:50
Technically this works, but it alters other things in the email to such as the sender, so isn't an option. – NickG Oct 31 '13 at 13:37

The Edit Email Subject extension does this (but it won't sync IMAP)

share|improve this answer
Yes, it will sync IMAP, as of New Year's. There's a configuration option. You have to enable it. – colan Apr 15 '12 at 22:51

TB Header Tools Extension (add-on)

this thunderbird add-on lets you change any header or the email's source. I use it with TB 3.1.9 to add subjects to those awful blank-subject emails ...

For a description/discussion of this add-on see:

Note: if you are using TB 3.1.x, make sure you get the patched version. The unpatched add-on will install, but won't show the edit dialog.

share|improve this answer
Dead link I'm afraid. – NickG Oct 31 '13 at 13:38

I use Thunderbird to connect to my Gmail account (via IMAPS); but for gritty email stuff, I use 'Mutt'; also via IMAPS. It's text based, (which takes a little getting used to initially), but extremely powerful. If you really need something graphical, than the 'Edit Email Subject' Thunderbird plug-in already mentioned is probably your best bet.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.