Thunderbird is a free, open source, cross-platform application for managing email, news feed, chat, and newsgroups. This is a local (not browser or web-based) email application that is powerful but easy to use. See Thunderbird features for a feature summary.

Thunderbird Email Features:

Thunderbird Email Account Setup Wizard.
One-click Address Book with Thunderbird Email.
Attachment Reminder in Thunderbird Email.
Thunderbird Mail tab.
Quick Filter Toolbar in Thunderbird Email.
Thunderbird email search tool.
Thunderbird Email Message Archive.
Large Email Thunderbird File Management.
Thunderbird Look & Feel.
Thunderbird Email Smart Folder.
Thunderbird Email Add-ons Manager.
Strong Thunderbird Email Privacy.
Thunderbird Email Phishing Protection.
Automatic Thunderbird Email Update.
Skip Thunderbird Email.
Thunderbird Email Open Source.

Thunderbird mail Android App Feature Tips:

Introduction to Thunderbird Email.
How to install Thunderbird Email.
Thunderbird Email Features.
Thunderbird Email Settings.
Thunderbird Email Tips & Tutorials.

Disclaimer: Thunderbird mail Android Tips app is not an official app. Thunderbird mail Android Tips application was created by Thunderbird Email users to help fellow Thunderbird Email users. Having fun