MozillaZine

Minimize to system tray (Thunderbird)

From MozillaZine Knowledge Base

Thunderbird cannot minimize itself to the system tray. However, users of Microsoft Windows can try using one of these solutions:

If you use GNOME, KDE, XFCE, or Fluxbox you can use kdocker or AllTray.

External links for general minimize-to-tray utilities

With the following utilities you can minimize not only Thunderbird, but any program to the system tray.

See also