New: ・Integrate an easily discoverable way to configure and use Thundermail (#10866, #10958, #10994)

Thunderbird for Android is a powerful, privacy-focused email app. Effortlessly manage multiple email accounts from one app, with a Unified Inbox option for maximum productivity. Built on open-source technology and supported by a dedicated team of developers alongside a global community of volunteers, Thunderbird never treats your private data as a product. Thunderbird for Android is based on K-9 Mail, which comes with a rich history of success and functionality in open source email.