Welcome to Firefox for Android Add-ons.
Add extra features and styles to make Firefox for Android your own.
CloseReview for Thunderbird Chat Notification by MrDagni
Rated 5 out of 5 stars
The new version is excellent. Suggest everybody to download it from the direct link.
I agree with the reviews below about the sound; setting a sound here should disable the default sound.
To create your own collections, you must have a Mozilla Add-ons account.