Rated 5 out of 5 stars

Worked great until about a week ago. Lost ability to access my calendar. Then upon upgrading to TB 115, I lost my added account and am unable to re-add it through the addon preferences page.

EDIT: Discovered that my issue was caused by a library issue that is installed with thunderbird. After fixing the library issue, Owl returned to functioning normally.

This review is for a previous version of the add-on (1.2.1).