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New Site for Thunderbird and SeaMonkey Add-ons

When Firefox Quantum (version 57) launched in November 2017, it exclusively supported add-ons built using WebExtensions APIs. addons.mozilla.org (AMO) has followed a parallel development path to Firefox and will soon only support WebExtensions-based add-ons.

As Thunderbird and SeaMonkey do not plan to fully switch over to the WebExtensions API in the near future, the Thunderbird Council has agreed to host and manage a new site for Thunderbird and SeaMonkey add-ons. This new site, addons.thunderbird.net, will go live in July 2018.

Starting on July 12th, all add-ons that support Thunderbird and SeaMonkey will be automatically ported to addons.thunderbird.net. The update URLs of these add-ons will be redirected from AMO to the new site and all users will continue to receive automatic updates. Developer accounts will also be ported and developers will be able to log in and manage their listings on the new site.

Thunderbird or SeaMonkey add-ons that also support Firefox or Firefox for Android will remain listed on AMO.

If you come across any issues or need support during the migration, please post to this thread in our community forum.

5 comments on “New Site for Thunderbird and SeaMonkey Add-ons”

  1. James M Murphy wrote on

    I’m glad there doing this new site. It was hard separating the good and bad add-ons hopefully this will help. I do have a request or inquiry though…. What Ever happened to the Thunderbird BACKUP and RESTORE Utility? Why was that abandoned?

    1. Chuck Baker wrote on

      If you are talking about TEBE (Thunderbird Environment Backup Extension), it is still available. Although I haven’t updated it in years, it still works fine with the latest Thunderbird release (v52.9.1)

      You can download/install it from http://softwarebychuck.com/tebe/tebe.html

  2. George wrote on

    Is that work properly ?

  3. Pam wrote on

    All links for themes go to a Not Found Page eg – https://addons.thunderbird.net/en-GB/thunderbird/addon/10900/ – all links appear to go to 10900 which shows this – We’re sorry, but we can’t find what you’re looking for.
    The page or file you requested wasn’t found on our site. It’s possible that you clicked a link that’s out of date, or typed in the address incorrectly.

    1. Caitlin Neiman wrote on

      Thanks, Pam! Could you let the Thunderbird folks know on this thread? https://discourse.mozilla.org/t/new-site-for-thunderbird-add-ons/30027