Thunderbird Tester Tools

by Mozilla Messaging

5 Add-ons in this Collection

Add-on Compatibility Reporter by Mozilla

Rated 4 out of 5 stars 214 reviews

81,005 users

Help make Firefox better. The Add-on Compatibility Reporter enables you to report if the Firefox add-ons that you're using are working properly.

Nightly Tester Tools by Automation Development, Tony Mechelynck, others

Rated 4 out of 5 stars 189 reviews

36,525 users

Useful tools for the nightly tester.

ViewAbout by Gary Kwong

Rated 4 out of 5 stars 15 reviews

3,277 users

Enables access to various about: dialogs from the View menu.

about:support by Siddharth Agarwal

Rated 4 out of 5 stars 5 reviews

32 users

A Mozilla Messaging addon to assist in product support.

Force RTL by Kai Liu, Ehsan Akhgari

Rated 5 out of 5 stars 6 reviews

174 users

Force a LTR locale to behave as if it was a RTL locale.

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