Tutanota is an encrypted email and calendar service based in Germany, with no advertising and the emphasis on privacy. The basic account is free, with paid-for accounts that have more features and storage. They also have their own apps for Android and iPhone.
ProtonMail is a Swiss-based email service with no advertising and maximum possible privacy for its users, funded entirely by donations and subscriptions. The basic account is free, with paid-for accounts that have more features and storage.
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Android App:
iOS App:
Posteo is an email service with no advertising, maximum privacy and powered entirely by green electricity. The service is paid for by its users. Posteo doesn’t make its own mobile apps, but you can use their service through your phone’s own built-in email app (or through any email app that supports the IMAP standard).
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Fastmail is an Australian company that offers private email funded entirely by its users, with no advertising or tracking. There’s a free trial, after which accounts cost various different prices for different features and amounts of storage space.
Soverin is based in the Netherlands and offers privacy-oriented email including custom domain name and optional web page too.
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Thexyz is a Canadian company offering privacy-conscious business email. There are low-price paid basic accounts with additional paid options for professional services such as MS Exchange and calendar sync. As well as the apps below, the service can also be used through any phone or computer app that supports IMAP (or Exchange if you’ve paid extra).
Kolab Now is a Swiss email provider with lots of extra services aimed at business people, including a calendar, file sharing, tasks and more. There’s a free trial, after which you pay a fee to continue using the service.
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Run by a German family business, mailbox.org offers email, online file storage and online office features such as calendars. There’s a one month free trial.
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K-9 Mail is an open source email client focused on making it easy to chew through large volumes of email.
GMX Mail is a free advertising-supported email service provided by GMX (Global Mail eXchange, in Germany: Global Message eXchange). Users may access GMX Mail via webmail as well as via POP3 and IMAP4 protocols. Founded in 1997, GMX is a subsidiary of United Internet AG, a stock-listed company in Germany,[1] and a sister company to 1&1 Internet and Fasthosts Internet.[1] In addition to an email address, each GMX account includes a Mail Collector, Address Book, Organizer, and File Storage. Every user can register up to 10 individual GMX email addresses. Premium or not, users are greeted by pop up ads at login. GMX is currently the only large email provider to support popup ads.[2] Currently GMX Mail has more than 11 million active users
Yandex.Mail (Russian: Яндекс.Почта) is a Russian free email service developed by Yandex. It was launched on June 26, 2000,[1][2] and is one of the three largest email services in Runet (along with Gmail and Mail.ru).[3] The service uses automatic spam filtering, checks for viruses using antivirus software from Dr.Web, and an email translator
Hey is a premium email service launched by Basecamp in June 2020.[1][2][3][4] The service may be accessed through the Hey website and through apps for macOS, Windows, Linux, Android and iOS.[5][6] Due to the service's vertical integration, a Hey mailbox cannot be incorporated into other email services or stand-alone email clients