Top Alternatives to Mailpile

Tutanota is a leading open-source email service offering robust end-to-end encryption and enhanced privacy. It provides a secure platform for communication and calendar management, accessible via web and dedicated applications.

Roundcube is a free and open-source webmail client providing a modern, user-friendly interface to access and manage your email via IMAP. It is designed for easy self-hosting and offers extensive customization options.

Kolab Now is a comprehensive, secure, and privacy-focused web-based email and groupware suite. Built entirely on free and open-source software, it offers a full range of collaborative tools including email, calendar, contacts, and document management, prioritizing user data ownership and security.

SOGo is a powerful open-source groupware server designed for scalability and simplicity. It provides a comprehensive suite of collaborative features including webmail, calendaring, contact management, and task management, with strong support for standard protocols like CalDAV and CardDAV.

RainLoop Webmail is a modern, fast, and user-friendly web-based email client designed for ease of use and robust functionality. It provides a clean interface for managing emails, supporting various protocols like IMAP and SMTP, and offers features like PGP encryption and multi-user support.

SquirrelMail is a widely-used, open-source, web-based email client and IMAP proxy server. It provides a simple, functional interface for accessing email through a web browser, offering a cross-platform solution for email management.

Horde Groupware is a free, web-based suite of applications designed for collaboration and productivity. Built on the robust Horde framework, it offers a comprehensive set of tools including webmail, calendar, task management, and note-taking, providing an integrated platform for individuals and teams.

Hushmail is a secure, encrypted email service designed for privacy-conscious individuals and organizations. Offering end-to-end encryption and robust security features, it provides a safe alternative to many standard email providers.

Autistici / Inventati is a platform dedicated to providing secure and private digital tools primarily for activists, social movements, and collectives globally. It offers a suite of services including encrypted webmail, web hosting, and anonymity tools, emphasizing user privacy and self-defense against surveillance.

Posteo is a privacy-focused, secure email service based in Germany, offering paid accounts with strong encryption and transparency features. It emphasizes user data protection and operates on a green energy infrastructure.

Mailfence is a secure, privacy-focused email service that provides end-to-end encryption and digital signatures using OpenPGP. It also includes a fully integrated suite of office tools like Calendar, Documents, and Contacts, all protected by strong security features.

Webmail Lite is an open-source, self-hosted webmail client designed for individuals and businesses seeking a private and customizable email solution. It offers basic email functionalities with a focus on privacy and control.