Rated 5 out of 5 stars

I don't know what I would do without this!
The only improvement that would be really good is the option to "Keep" (prioritise) messages that have been replied to. That way they could remain part of a long discussion thread & not break in the middle if I've chosen the wrong one.
How do I give you money? (No PayPal link on the Add-ons page).

This review is for a previous version of the add-on (0.3.16).  This user has a previous review of this add-on.