von Beonex (Entwickler) am April 17, 2025 · Permanentlink

It seems to be broken by a Thunderbird security update 128.9.2 and 137.0.2. We're looking into fixing it.

UPDATE: We have a fix. It's currently in TB addon review, but you can already manually download it from https://www.beonex.com/owl/owl.xpi (Firefox thinks it's a FF addon, but it's obviously not) and install it in TB | Addons | Wheel button | Install addon from file...