Thunderbird

Thunderbird is a free, open source, and highly customizable email client packed with features to create a personalized email experience.

Thunderbird Features

• Easily access your IMAP, SMTP, and SSL/TLS accounts with just your name, email address and password. No configuration required. Thunderbird supports Gmail, Hotmail, Yahoo, Outlook, and more.
• One-click address book: Quickly add new contacts by clicking the star.
• Attachment Reminder: Don't forget to send important documents.
• Multiple-channel chat: Chat with your contacts on Facebook Messenger, Google Talk, IRC, Twitter and XMPP within Thunderbird.
• Tabbed Email: Open multiple emails for quick cross referencing.
• Web Search: Search via multiple search engines.
• Quick Filter Toolbar: Filter by by New Messages, Tags, and people.
• Quick Search: Thunderbird indexes all your messages so you can search even faster.
• Message Archive: Archive any important emails that you may need later.
• Activity Manager: See all interactions with your email provider to ensure everything is running smoothly.

Customization

• Send Large files: Bypass attachment size limits by utilizing online storage services.
  Themes - Change the look and feel of thunderbird with hundreds of skins to choose from.
• Smart Folders: Combine your inbox, sent and archive folders from different email providers, so you don't miss any emails again.
• Add-ons: Thunderbird features various add-ons to improve functionality.

Security

• Strong Privacy and Do Not Track option.
• Phishing Protection to block email scams.
• Effective junk mail detection.
• Automatic security updates.