Install claws-mail-acpi-notifier by entering the following commands in the terminal:
sudo apt update sudo apt install claws-mail-acpi-notifier
Description:
Laptop's Mail LED control for Claws Mail
This plugin for the Claws Mail mailer enables notification of new mail using the mail LED available on some portable computer models from Acer, ASUS, Fujitsu and IBM makers.
Homepage: http://www.claws-mail.org
Version: 3.16.0-1
Section: universe/mail