- Free • Open Source
- Email Client
- Calendar App
93 alternatives to Thunderbird- Mac
- Windows
- Linux
- BSD
- AppImageHub
- Snapcraft
- Flathub
- PortableApps.com
- Haiku
- Homebrew
- Chocolatey
Thunderbird is a free, open source, cross-platform e-mail, news and instant messaging client. The project strategy is modeled after Mozilla Firefox.
Thunderbird Features
Top 3 alternatives
- Freemium • Open Source
- WebMail Provider
- Email Client
- Calendar App
86 alternatives to Proton Mail- Linux
- Online
- Android
- iPhone
- iPad
- Tor
Secure email with absolutely no compromises, brought to you by MIT and CERN scientists.
Proton Mail Features
Top 3 alternatives
- Free • Proprietary
- WebMail Provider
- Email Client
- Mail Server
81 alternatives to Gmail- Online
- Android
- iPhone
- Chrome OS
- Android Tablet
- iPad
- Google Chrome
- Android Wear
- Android TV
- Software as a Service (SaaS)
The official Gmail app brings the best of Gmail to you with robust security, real-time notifications, multiple account support, and search that works across all your mail.
Gmail Features
Top 3 alternatives
K-9 is an open source email client for Android with multi-folder sync, email signatures, Bcc-to-self, return-address configuration, keyboard shortcuts, Exchange Support, message flagging, IMAP deletes, saving attachments, configurable notifications and more.
K-9 Mail Features
Top 3 alternatives
Disroot is a platform providing online services based on principles of freedom, privacy, federation and decentralization.
Disroot Features
Top 3 alternatives
FairEmail is a privacy-focused email client with a setup wizard that helpfully walks you through the steps to use it with any email provider. There are many privacy settings including encryption via OpenPGP and S/MIME and reformatted emails to avoid phishing.
FairEmail Features
Top 3 alternatives
Outlook.com, part of Office Online (not to be confused with Microsoft Office Outlook ), is a webmail service from Microsoft, successor of Hotmail.
Outlook.com Features
Top 3 alternatives
- Free • Open Source
- Email Client
- Calendar App
82 alternatives to Evolution- Linux
- BSD
- S/MIME
- GNOME
- OpenPGP
- Flathub
Evolution is a personal information management application that provides integrated mail, calendaring, address book and task list functionality. Evolution supports a wide range of industry standard data formats and network protocols for information exchange, with an emphasis on...
Evolution Features
Top 3 alternatives
- Freemium • Open Source
- Email Client
45 alternatives to Mailspring- Mac
- Windows
- Linux
- Arch Linux
- Fedora
- Ubuntu
Boost your productivity and send better email with Mailspring, a beautiful, fast email client for Mac, Windows, and Linux. Mailspring is free to use and an optional pro version adds read receipts, send later, reminders and more.
Mailspring Features
Top 3 alternatives
- Free • Open Source
- Encrypted Chat App
- Instant Messenger
- Group Chat App
57 alternatives to Delta Chat- Mac
- Windows
- Linux
- Android
- iPhone
- Android Tablet
- FLATHUB
- F-Droid
Delta Chat looks and feels like other popular messenger apps, but does not involve centralized control, tracking or selling you, friends, colleagues or family out to large organizations. "Privacy by Design" has never been more fun.
Delta Chat Features
Top 3 alternatives
Posteo is an independent email service provider. Based in Berlin since 2009. With focus on security, privacy, and sustainability. They offer ad free paid email accounts for individuals and businesses.
Posteo Features
Top 3 alternatives
eM Client is a full featured e-mail client with a modern and easy to use interface. eM Client also offers calendar, tasks, contacts, notes and chat.
eM Client Features
Top 3 alternatives
Geary is an email application built around conversations, for the GNOME 3 desktop.
Geary Features
Top 3 alternatives
Mailbox.org offers a secure e-mail account for home and business use. The domain name, me@mailbox.org, is easy to remember and can be understood anywhere in the world. They have been operating e-mail accounts for more than 20 years and are a highly reliable service provider.
Mailbox.org Features
Top 3 alternatives
Claws Mail is an email client (and news reader), based on GTK+, featuring
Quick response Graceful, and sophisticated interface Easy configuration, intuitive operation Abundant features Extensibility Robustness and stability.
Claws Mail Features
Top 3 alternatives