Rated 5 out of 5 stars

le Stefan ar Noll. 2, 2021 ·

Splendid little add-on, rsjtdrjgfuzkfg, but would it be possible for you to add that little feature to MoC, right-mouse-click on the icon in the tray to close Thunderbird?

Léirmheas ar leagan níos sine den bhreiseán seo (2.0.1.1).  Rinne an t-úsáideoir seo léirmheas ar an mbreiseán seo cheana.

le rsjtdrjgfuzkfg (Forbróir) ar Noll. 2, 2021 ·

Assuming you mean the built-in icon available on Windows only: No. That icon and its menu cannot be modified by add-ons, it exists purely in native code. You might be able use a separate application to minimize Thunderbird to the tray instead (instead of using the built-in feature).