Review for Master Password+ by PeterW
Rated 5 out of 5 stars
extends Thunderbird, Seamonkey and Pale Moon build-in password manager with timout, automatic lock and other useful features.
Before you start complaining this extension is not compatible with Firefox 57+, learn WHY Mozilla ruined own product by removing XUL add-ons and replacing it with crippled-down API.
To create your own collections, you must have a Mozilla Add-ons account.