Tab

[Climber74]

You display one tab per one opened mail. All this tabs are displayed with the same fade grey.

it's difficult to spot an mail (Tab) with an other one (Tab).

I suggest to alternate grey tab and dark tab.

Hoppening my sentences are unstandable. Thank you very much for your work.

I love Thunderbird email application.

Best regards

François HUGUES

[Jon]

Thanks for submitting an idea to the Mozilla Connect community! Your idea is now open to votes (aka kudos) and comments.

[Jon]

Hey @Climber74 - welcome to Connect and thanks for the suggestion! If you have a chance, I recommend updating the title to be more descriptive of your idea — this will help other community members/visitors/Thunderbird employees find and better understand it. Check out our article on How to Submit a Great Idea in Five Easy Steps 

[Agentvirtuel]

Hello

If you are userChrome.css
Take a look https://forums.mozillazine.org/viewtopic.php?p=14974171#p14974171
/* Tabmail Tab */