K-9 Mail Alternatives

Tutanota is the world's most secure email service, easy to use and private by design. Tutanota brings secure email for everybody.

World's largest secure email service providing end-to-end encrypted email accounts. ProtonMail is based in Geneva, Switzerland and protected by Swiss privacy laws. The software is openly developed with fully open source code.

HEY is a privacy focused commercial email provider. It brings a fresh approach and transforms email into something you want to use, not something you’re forced to deal with.

A free an open-source email client developed openly by the Mozilla Foundation and the community. Thunderbird is easy to setup and customize and supports POP and IMAP. The email client comes with all features needed to search, filter, write and manage emails, but also have builtin support for live chat between contact and RSS/Atom feed reader.

Zoho Mail provides ad-free email hosting for business and organizations. It's comes with intuitive migration tools, along with 24/7 dedicated migration support to ensure smooth, lossless migration from your existing email provider. With Zoho Mail, your organization can manage all their email, calendar and contact needs. Since Zoho Mail is part of the Zoho's suite of online productivity, it's easy to extend the capability in to more parts of Zoho's offering and essentially run your entire business with Zoho. Zoho is provided as a Freemium software, where the free plan supports up to 5 users in an organization.

Postbox is an email provider that supports a full suite of keyboard shortcuts, an extensive set of filters/rules, and intuitive swipe actions on macOS to dispatch messages with ease. You can try Postbox for free and enjoy an intuitive interfaces for managing your email that feels lika a native Mac or Windows application.

Mailbird is a desktop email client with an easy to use and intuetive interface. With Mailbird you can save time managing multiple accounts with the best email client for Windows and macOS.

Airmail is a performant mail client for developed for iOS and macOS. The client is designed to provide intuetive interactions native to the Apple ecosystem. Airmail integrates with third-party services and protocols like IMAP, POP3,  iCloud, MS Exchange, Gmail, Google Apps, Yahoo! Mail, AOL, Outlook.com, Live.com.

FastMail is a secure, private, independent, online email provider. Get started with FastMail today, with Gmail transfer tool.

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