Claws Mail is described as *»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»* and is a 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 iPhone. The best alternative is [Thunderbird](/software/mozilla-thunderbird/about/), which is both free and Open Source. Other great apps like Claws Mail are [K-9 Mail](/software/k-9/about/), [Microsoft Office Outlook](/software/microsoft-office-outlook/about/), [Mailspring](/software/mailspring/about/) and [FairEmail](/software/fairemail/about/). Claws Mail alternatives are mainly Email Clients but may also be RSS Readers or Calendar Apps. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of Claws Mail.
