Sylpheed is a simple, lightweight but featureful, and easy-to-use e-mail client (mailer, MUA).
Platforms
- Mac
- Windows
- Linux
- BSD
- PortableApps.com
Japan
+3
Thunderbird Alternatives
Thunderbird is described as 'Cross-platform email client providing POP/IMAP support, robust filtering, multiple accounts, and chat. Extendable via add-ons with RSS/Atom, etc' and is a leading Email Client in the office & productivity category. There are more than 50 alternatives to Thunderbird for a variety of platforms, including Windows, Mac, Linux, Android and iPhone apps. The best Thunderbird alternative is Claws Mail, which is both free and Open Source. Other great apps like Thunderbird are Evolution, Betterbird, SeaMonkey and K-9 Mail.
filter to find the best alternatives
Thunderbird alternatives are mainly Email Clients, but if you're looking for Calendar Apps or Contact Managers you can filter on that. Other popular filters include Linux, Open Source, iPhone, Kindle Fire, Mac, Windows and Android. You can also filter by region, for example EU-based alternatives if you prefer software developed in the European Union. These are just examples - use the filter bar below to find more specific alternatives to Thunderbird.
Alternatives list
- 48 Sylpheed alternatives
The free Zimbra Desktop client allows you to meld the online and offline worlds – storing and synching your email, calendar, contacts, files and documents in the cloud, yet having them locally accessible when on the road.
Cost / License
- Free Personal
- Proprietary
Application typeApplication types
Platforms
- Mac
- Windows
- Linux
United States
+3
73 Airmail alternativesEngineered for iOS, macOS, and watchOS, this fast mail client supports multiple account types, custom actions, Smart Inbox filtering, unified inbox, privacy mode, email scheduling, snooze, third-party app integration, flexible personalization, and advanced workflow tools.
Cost / License
- Paid
- Proprietary
Application type
Platforms
- Mac
- iPhone
- iPad
- Apple Watch
Italy
EU
Cost / License
- Free
- Open Source (AGPL-3.0)
Application type
Platforms
- Online
- Self-Hosted
- Nextcloud
Trojitá, is a fast Qt IMAP e-mail client that respects open standards and facilitates modern technologies. Trojitá values vendor-neutrality that IMAP provides and is committed to be as interoperable as possible.
Platforms
- Windows
- Linux
Czechia- EU
57 Mutt alternativesMutt is a small but very powerful text-based mail client for Unix operating systems. Some of its features are: color support, message threading, MIME support (including RFC2047 support for encoded headers), PGP/MIME (RFC2015), various features to support mailing lists, including...
Cost / License
- Free
- Open Source
Application type
Platforms
- Mac
- Windows
- Linux
- Xfce
- United States
aerc is an email client that runs in your terminal. It's highly efficient and extensible, perfect for the discerning hacker.
Cost / License
- Free
- Open Source
Application type
Platforms
- Linux
ElectronMail is an Electron-based unofficial desktop client for ProtonMail end-to-end encrypted email provider. The app aims to provide enhanced desktop user experience enabling features that are not supported by the official in-browser web clients.
Cost / License
- Free
- Open Source (GPL-3.0)
Application type
Platforms
- Mac
- Windows
- Linux
- Proton Mail
- Electron
- Arch Linux
- Snapcraft
- Flathub
- Flatpak
- Chocolatey
- AppImage
- Debian
- Ubuntu
- Linux Mint
- Raspberry Pi
- Raspberry Pi OS
- Fedora
Wino is a lightweight native mail client for Windows 10/11. It is still in active development. Main motivation for this project is to replace Mail & Calendar for Windows with modern Windows design without using web technologies for speed.
Cost / License
- Freemium
- Open Source (GPL-3.0)
Application type
Platforms
- Windows
Türkiye
+2
Collaborative email and threaded group chat for productive teams. A single app for all your internal and external communication.
Cost / License
- Paid
- Proprietary
Application typeApplication types
Platforms
- Mac
- Windows
- Online
- Android
- iPhone
Canada
+6
38 Foxmail alternativesFoxmail is a free POP3 and IMAP4 e-mail client in English and Chinese for Windows systems.
Cost / License
- Free
- Proprietary
Application typeApplication types
Platforms
- Mac
- Windows
China
74 MailMate alternativesMac IMAP email client featuring keyboard control, Markdown email composition, advanced search capabilities, smart mailboxes, automatic signature handling, cryptographic options with OpenPGP/S-MIME, tagging, multiple notifications, and customizable layouts including widescreen.
Cost / License
- Paid
- Proprietary
Application type
Platforms
- Mac
- S/MIME
- OpenPGP
- Global
+2
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