Comment 130 for bug 376715

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In , Jporter+bmo (jporter+bmo) wrote :

> Thunderbird 60 drops .xpi support

Where did you hear this? That's not true, and in fact I have a number of old-style extensions I develop that work just fine in Thunderbird 60+. However, add-ons will likely need some small updates for TB 60, so they've been marked as incompatible by default.