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Posts: 285
Joined: March 21st, 2005, 12:17 pm
Location: Waterloo, Ontario

Post Posted November 19th, 2019, 12:42 pm

There was a feature (ADD-ON) which allowed you to expand a group too list when sending out mail. Normally, i don't care who it's going to but when i get an error trying to send to a particular group i'd like to see the list to debug the problem, but apparently i can no longer do so.

Is/will this ADD-ON be replaced? Is there some other way to accomplish this?


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Joined: September 23rd, 2004, 8:57 pm
Location: Somewhere on the right coast

Post Posted November 19th, 2019, 2:54 pm

The addon (extension) you might be referring to was It has not been updated to be compatible with current versions of Thunderbird and may never be because of changes in the TB API, many of which are shared with Firefox.
The same applies to this other addon for the same purpose -- ... ts/?src=ss

Posts: 3635
Joined: February 3rd, 2009, 6:29 pm

Post Posted November 19th, 2019, 3:36 pm

DaveRo fixed the following extension for Thunderbird 68.

Expand mailing list recipients a.k.a. PopMailListRecipients

I'm not sure the best way to contact him.

DaveRo (only has 5 posts)

Posts: 491
Joined: April 1st, 2012, 10:21 am

Post Posted November 19th, 2019, 5:07 pm

It's possible to expand the list directly: in the new message window, show the Contacts sidebar (F9), right-click a mailing list, Edit List, click OK, and the list contacts are displayed in the sidebar. Select the contacts you wish to email, then Add to: at the bottom of the sidebar.

Posts: 3635
Joined: February 3rd, 2009, 6:29 pm

Post Posted November 19th, 2019, 5:54 pm

Here is the code snippet to expand recipients from the extension. (not tested)

Code: Select all
(function () {
  var win = Services.wm.getMostRecentWindow("msgcompose");
  if (win) {
    console.log("The operation has completed.");
  } else {
    console.log("The compose window isn't opened.");


* open config editor
* set preference to true
* tools > developer tools > error console
* copy and paste code into error console
* press enter to run

Error Console command line

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