Top Alternatives to Horde

Gmail, a cornerstone of Google's productivity suite, is a free, web-based email service renowned for its intelligent organization, powerful search capabilities, and integration with other Google services. Available across various platforms, it remains a leading choice for personal and professional communication.

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.

Mailpile is a free and open-source webmail client designed with privacy and encryption as core principles. It offers a self-hostable solution for managing your email with built-in support for PGP encryption and other security features, providing an alternative to traditional webmail services.

Zoho Mail is a secure and private email hosting service for both individuals and businesses, offering custom domains, ample storage, and integration with the Zoho suite of productivity tools. It prioritizes user privacy with strong encryption and a strict no-ads policy, providing a professional and reliable communication platform.

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.

Zimbra Collaboration Suite is a comprehensive open source email and collaboration platform designed for businesses. It provides a secure and feature-rich environment for email, calendaring, contacts, tasks, and file sharing, supporting on-premises and cloud deployments.

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.

iRedMail is a comprehensive, free, and open-source mail server solution designed for ease of deployment and maintenance. It bundles popular components like Postfix, Dovecot, and Roundcube, providing robust email, calendar, and contact management capabilities.

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.

mailcow is a comprehensive open-source mail server suite built on Docker, providing a robust and secure platform for self-hosting email. It integrates various components like Postfix, Dovecot, and SOGo into a single, easy-to-manage system.