Developer reply by Mic
Rated 2 out of 5 stars
Do'nt work correctly/ I have 45 mails. addon show only 0 mails in inbox
This review is for a previous version of the add-on (1.4.5).ThunderStats has been rewritten from scratch, try version 1.9.x for Thunderbird 115 or version 2.x.x for Thunderbird 128+!
Thank you!
To create your own collections, you must have a Mozilla Add-ons account.