https://connect.mozilla.org/t5/discussions/can-thunderbird-be-set-to-filter-out-emails-with-specific/m-p/123352#M48513 <P>It's not possible. Add your comment at&nbsp;<A href="https://connect.mozilla.org/t5/ideas/please-add-regular-expressions-and-or-wildcards-to-thunderbird/idi-p/19371" target="_blank">https://connect.mozilla.org/t5/ideas/please-add-regular-expressions-and-or-wildcards-to-thunderbird/idi-p/19371</A>.</P> Wed, 22 Apr 2026 02:40:20 GMT siffemcon 2026-04-22T02:40:20Z https://connect.mozilla.org/t5/discussions/can-thunderbird-be-set-to-filter-out-emails-with-specific/m-p/123350#M48512 <P><A href="mailto:joint-pain-8@affk-2f299.firebaseapp.com" target="_blank">joint-pain-8@affk-2f299.firebaseapp.com</A><BR />Using the address show above as an example.&nbsp; I am finding that trying to "unsubscribe" from these new group addresses is impossible and as the addresses are all 'slightly' different you can't successfully block them.&nbsp; So my question is can you use special characters like we used to use when searching DOS commands to filter these out.<BR />For example is there a way to ask to filter out *@*.firebaseapp.com&nbsp; This would be an attempt to filter out anything that has the .firebaseapp.com as part of the address.</P> Wed, 22 Apr 2026 01:15:02 GMT https://connect.mozilla.org/t5/discussions/can-thunderbird-be-set-to-filter-out-emails-with-specific/m-p/123350#M48512 Caddyman 2026-04-22T01:15:02Z https://connect.mozilla.org/t5/discussions/can-thunderbird-be-set-to-filter-out-emails-with-specific/m-p/123352#M48513 <P>It's not possible. Add your comment at&nbsp;<A href="https://connect.mozilla.org/t5/ideas/please-add-regular-expressions-and-or-wildcards-to-thunderbird/idi-p/19371" target="_blank">https://connect.mozilla.org/t5/ideas/please-add-regular-expressions-and-or-wildcards-to-thunderbird/idi-p/19371</A>.</P> Wed, 22 Apr 2026 02:40:20 GMT https://connect.mozilla.org/t5/discussions/can-thunderbird-be-set-to-filter-out-emails-with-specific/m-p/123352#M48513 siffemcon 2026-04-22T02:40:20Z