Review for SmilieInserter Plus by Grandpa pete
Rated 1 out of 5 stars
Although stated to to compatible with Tb 0.7-31* I got message "This add-on is not compatible with your version of Thunderbird" (60.0.3) . Clicked "Install Anyway", got message "This add-on could not be installed because it appears to be corrupt". Code apparently needs updating for 60*.
To create your own collections, you must have a Mozilla Add-ons account.