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

I have a user who needs to show all of the email address in Thunderbird without having to click the "show triangle"!

To explain:- I have screenshotted before clicking the show triangle and after (email addresses removed to protect the innocent). As you can see the second line of email addresses are hidden.

I imagine there is a setting in about:config, but I have yet to find it!

enter image description here

enter image description here

share|improve this question
up vote 1 down vote accepted

Someone did find a hack to enable something like this, but it seems like it could be more hassle than it's worth (and may not even work in the latest versions).

See this thread:

You may want to add this as an idea at if it's not already there.

share|improve this answer

mail.showCondensedAddresses is the one

share|improve this answer
No it isn't - it alters the display name of the person - nothing at all to do with showing all email addresses. See – Jon Rhoades Oct 12 '09 at 4:46
@blanx: Your answer might be the wrong one for this question, but was the right one for what I wanted to do. Thanks. – Mike L. Feb 16 '11 at 13:38

Since Thunderbird 3.1.3 (circa 2010), the following property allows you to choose the default number of address lines shown before "more" appears:


When equal to 0 all lines are shown. It defaults to 1. (Reference.)

share|improve this answer
This worked for me in Thunderbird 31.4.0. – kmoser Jan 15 '15 at 17:39

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.