Apps to Encrypted Email

Disroot is a Free and Open-Source Software (FOSS) project offering privacy-focused online services, primarily secure email, alongside collaborative tools like cloud storage, document editors, and file sharing, all under a strong commitment to user anonymity and decentralization.

Evolution is a comprehensive personal information manager for the GNOME desktop environment, designed to manage emails, contacts, calendars, and tasks. It provides a unified interface for various communication and organizational needs.

GPGMail is a robust extension for Apple Mail, seamlessly integrating OpenPGP encryption and digital signatures directly into your email workflow for enhanced privacy and security.

Soverin offers a secure and private suite of tools, combining encrypted email, a user-friendly website builder, and integrated organizational features, all centered around protecting user data and providing a comprehensive online presence.

Firmao CRM is a comprehensive cloud-based business management software designed for small and medium-sized enterprises. It seamlessly integrates critical business functions including Customer Relationship Management (CRM), project and task management, invoicing, and more to provide a unified platform for operational efficiency.

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.

<p>MailMate is a powerful, keyboard-centric IMAP email client for macOS designed for users who demand advanced email management capabilities and a highly customizable workflow, featuring strong Markdown integration and robust search features.</p>

MDaemon Messaging Server is a comprehensive email server solution designed for businesses of all sizes. Offering robust security, flexible deployment options, and integrated collaboration tools, it provides a powerful alternative to cloud-based email services.

GPGTools is a comprehensive suite of open-source software for macOS that empowers users with the ability to encrypt, decrypt, sign, and verify emails and files using the OpenPGP standard. It seamlessly integrates with Apple Mail and provides a secure gateway for sensitive communications and data handling.

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.

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.

Mailvelope is a free and open-source browser extension for Chrome and Firefox that brings end-to-end encryption to your existing webmail services using the OpenPGP standard. It allows users to encrypt, decrypt, and digitally sign emails directly within their web browser, enhancing privacy and security without requiring a change in email provider.

Kontact is a comprehensive personal information management suite from KDE combining email, contacts, calendar, tasks, and news in one integrated application. It offers robust synchronization options and supports various protocols.

Email.biz offers a secure and privacy-focused email service designed for businesses and individuals prioritizing data protection and generic domain identities. It provides essential communication tools including encrypted email, calendar, and contact management, with integrations for enhanced productivity.

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.

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.

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.

Mutt is a highly configurable, text-based email client for Unix-like systems. It offers powerful features for advanced users who prefer a lightweight and efficient email management experience directly from the command line.

GMX Webmail provides a reliable and feature-rich free email service. With strong privacy features, integrated cloud storage, and tools like a calendar and mail collector, it offers a comprehensive suite for managing digital communication and files.

Flunify is a comprehensive project management and collaboration platform designed for teams of all sizes. It combines task management, real-time communication, document sharing, and social networking features into a single, intuitive interface, aiming to streamline workflows and boost productivity.

Newton is a powerful, subscription-based email client designed for efficiency and productivity across multiple platforms. It offers a clean interface, unified inbox, and advanced features like read receipts, undo send, and integrations with popular productivity tools.

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.

Google Workspace (formerly G Suite) is a comprehensive suite of cloud-based productivity and collaboration tools. It includes Gmail, Docs, Sheets, Drive, Calendar, and more, designed to help teams work together efficiently from anywhere.

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.

eM Client is a comprehensive email client for Windows and macOS, integrating email, calendar, contacts, tasks, and chat into a single application. It offers robust features for managing multiple accounts, advanced security options, and a user-friendly interface, making it a powerful alternative to other popular email applications.

Apple Mail is the default email client for macOS, iOS, and watchOS, offering a seamless and integrated email experience across Apple devices with features like rich text editing, multiple account support, and robust organization tools.

Outlook.com is a free, personal webmail service offered by Microsoft, providing robust email management with integrated calendar, contacts, and cloud storage.

Gpg4win is a comprehensive security suite for Windows, enabling robust email and file encryption through the widely-respected GnuPG framework. It provides essential tools for protecting sensitive data and ensuring digital communication privacy.

Kolab Community is a comprehensive, free, and open-source groupware suite designed for collaborative work. It provides integrated email, calendar, contacts, and tasks functionalities, empowering individuals and teams to communicate and manage their data efficiently and with a strong focus on data privacy.

Lavabit was a highly secure, privacy-focused webmail service known for its strong encryption and commitment to user data protection, which ceased operations in 2013.