Rated 1 out of 5 stars
Doesn't seem to work with TB 17. Clicking on attachments in an email just opens an open with dialog. When choosing Thunderbird as the application, it just opens an email with the ics file as an attachment. Read the instructions for Lookout. It seems like all I'd need to do is double-click the attachment in an email and it will load into the Lightning calendar. But it is not happening like that in my version.