Rated 5 out of 5 stars

by Devott on Jan. 6, 2018 ·

For everyone out there not sure what to do with the xpi file downloaded via Happy One's link: I opened up Add-ons in Thunderbird, removed the old version, and then just dragged the new xpi file into the Add-ons box. Worked for me with ver. 52.5.2 on Win10

This review is for a previous version of the add-on (62.0).