Claws Mail is described as 'GTK+-based client offering fast performance, news reading, robust stability, extensibility via plugins, advanced filtering, encryption, folder and contact management' and is a very popular Email Client in the office & productivity category. There are more than 50 alternatives to Claws Mail for a variety of platforms, including Windows, Mac, Linux, Android and Web-based apps. The best Claws Mail alternative is Thunderbird, which is both free and Open Source. Other great apps like Claws Mail are K-9 Mail, Betterbird, Evolution and FairEmail.
Streamline your email experience by managing multiple accounts, integrating apps like Slack and Google Calendar, and using AI-driven features like drafting and spam prevention. Customize your workspace with themes, notifications, and tools for improved productivity and a modern interface.
Cross-platform email client supporting multiple identities, chat, and strong filtering. Extend functionality with add-ons like RSS/Atom feed readers and PGP support.
I never got to random bugs and troubleshooting. TB always crashed before I got to that stage. Even on a 16gb debian machine with an SSD. Claws not as easy to use but much, much lighter. Wish they'd get rid of that creepy turkey foot logo tho.
Most users think Thunderbird is a great Claws Mail alternative.
Thunderbird is the most popular Windows, Android, Mac & Linux alternative to Claws Mail.
Thunderbird is the most popular Open Source & free alternative to Claws Mail.
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.
Best open-source mail client for android!
Almost everyone thinks K-9 Mail is a great Claws Mail alternative.
K-9 Mail is the most popular Android Tablet alternative to Claws Mail.
Betterbird, a soft fork of Mozilla Thunderbird, improves user experience with advanced features, bug fixes, security patches, and multi-row descriptions similar to Outlook. Compatible with multiple platforms and can be used alongside Thunderbird, sharing the same profile.
Evolution is a personal information management application that provides integrated mail, calendaring, address book and task list functionality.
Open-source, privacy-focused email client offering features such as encryption via OpenPGP and S/MIME, unlimited accounts, a unified inbox, customizable settings, and reformatted emails to prevent phishing. Supports two-way synchronization and provides Pro features for additional customization.
Streamline emails, calendars, contacts, and task management with a smart inbox prioritizing critical messages. Includes calendar scheduling, third-party app integration like Facebook, Dropbox, and Trello, and support for Microsoft Exchange, Outlook.com, and Gmail, ensuring efficient task and email handling.
Some users think Microsoft Outlook is a great Claws Mail alternative, some don't.
Microsoft Outlook is the most popular Web-based, iPhone & iPad alternative to Claws Mail.
Microsoft Outlook is the most popular commercial alternative to Claws Mail.
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.
E-mail app with all the great features: swipes (long/short), snooze, add (multiple) attachments from the cloud, support for various e-mail services and more.
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.
Access, view and manage messages from all your email accounts in one place. Categorize your messages into easy to browse categories. Catch up on email easily with Apple Intelligence powered Priority Messages and summarizations.
"The best way to manage email on a Mac, according to Apple." Which is refreshing, since the makers of most email apps don't claim that their app is the best.
Reeder is your all-in-one inbox for reading, watching and listening to content from various sources.
Geary is an email application built around conversations, for the GNOME 3 desktop.
United States
Germany
EU
Netherlands
Czechia
Ukraine
Switzerland
Thunderbird is great if you want the tantalizing prospect of tons of power & customizability, and an equivalent amount of random bugs and troubleshooting to make sure it's not worth it.