Thunderbird add-ons corrupt or unverified

Thunderbird Add-ons
1

I was trying to install some thunderbird add-ons from addons.thunderbird.net/en-GB/thunderbird/ and I noticed that a number of them cannot be installed because they are either corrupt or unverified. Here are some examples, all taken from the featured add-ons (but all other add-ons I tried suffered from the same issue).

  • Enigmail: unverified
  • Mail Merge: corrupt
  • Compact Header: corrupt
  • Mail Redirect: corrupt
  • Card Book: corrupt

My Firefox is up-to-date at 61.0.1 (64-bit), and I have disabled all my add-ons (just in case). Is it something on my end or is this a problem with the site?

2

See this post.

https://support.mozilla.org/en-US/kb/thunderbird-add-ons-frequently-asked-questions#w_installing-add-ons-downloaded-from-outside-thunderbird-e-g-using-a-web-browser-like-firefox

3

Sure: installing from “Extensions” withing Thunderbird works. But trying to install from “Get Add-ons” within Thunderbird opens the webpage above, and clicking on any of the “Download Now” green buttons triggers Firefox to install the add-on, which results in an error message. This clearly isn’t be the intended behaviour, so there is something to be fixed here.

4

Thunderbird 52.9.1 did not get an update to point to addons.thunderbird.net and still looks for addons.mozilla.org.

  I suspect that won't be fixed because Thunderbird 60.0 should be released soon, where using Tools > Add-ons > Get Add-ons works as expected because it opens addons.thunderbird.net in a new tab within Thunderbird.
5

Does the behavior deviate from what is described at https://support.mozilla.org/en-US/kb/installing-addon-thunderbird ?

6

Using TB 52.9.1 the behavior does not deviate from the Ideal Case. Search for an extension and a list of results open in a new tab in Thunderbird.

If the user selects the Get Add-ons panel and tries to install an extension by selecting a Featured Add-on, the add-on opens in Firefox with the link,

https://services.addons.thunderbird.net/en-US/thunderbird/discovery/addon/silvermel/?src=discovery-featured

Using Thunderbird 60 rc, any extension selected in the Get Add-ons panel would open in the Add-ons Manager tab in Thunderbird ready for installation.