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CloseReview for Auto Select Latest Message by Jayes
Rated 4 out of 5 stars
Editing the manifest.json file, as mentioned before, makes it work in 102 ... but not at startup, only when changing folders. Combined with "Start with Inbox" plugin I get exactly what I want.
This review is for a previous version of the add-on (3.1.5).To create your own collections, you must have a Mozilla Add-ons account.