Not available for Thunderbird 18.* Rated 4 out of 5 stars

May I ask when Thunderbird 18.* is again supported? I assume it's a matter of just changing the versions range.

It's very inconvenient to buy a paid plan and learn WisStamp is no longer supporting your email client.

This review is for a previous version of the add-on (3.11.21.1-signed).