Rated 5 out of 5 stars

per Greg el jul. 8, 2011 ·

Thunderbird is just reporting that it's incompatible incorrectly. You can disable version checking by adding a Boolean "extensions.checkCompatibility5.0" option as FALSE in about:config to get it to work.

This review is for a previous version of the add-on (1.0.1-signed.1-signed).