Alternatives to Columba

Thunderbird

Thunderbird is an open source, cross-platform email client and news reader developed by the Mozilla Foundation. It is designed to be powerful, yet easy to use and customize. It offers a range of features such as an address book, message organization, multiple account support, mes...

K-9 Mail

K-9 Mail is an open source email client for the Android operating system. It is designed to be lightweight and highly customizable, while still providing a powerful set of features. It supports IMAP, POP3, and Exchange 2003/2007 (with WebDAV). K-9 Mail allows users to manage mult...

Microsoft Office Outlook

Microsoft Office Outlook is a personal information manager from Microsoft, commonly used as an email application, calendaring, task manager, contact manager, and note taking. It is part of the Microsoft Office suite of applications, included in the Professional and higher edition...

Outlook.com

Outlook.com is an email and calendar service from Microsoft. It is part of the Microsoft Office suite of applications and services, providing users with a single platform to manage multiple email accounts, contacts, and calendars. With Outlook.com, users can access their email ac...

eM Client

eM Client is a powerful and user-friendly email client and calendar application. It allows you to sync your emails, contacts and calendars across multiple devices. It has an easy to use interface and supports a variety of popular email services such as Gmail, Outlook and Exchange...

Evolution

Evolution is an online office suite and productivity platform that helps you to manage your documents, tasks, emails, and more. It offers a suite of tools to help you organize, collaborate, and stay productive. You can create and share documents, manage tasks and emails, and trac...

Apple Mail

Apple Mail is a built-in email client that comes with macOS and iOS. It allows users to send and receive emails, manage contacts, and organize their emails. It also includes a number of useful features such as an integrated calendar, notes, and to-do list. It supports a variety o...

Spark

Spark is a cloud-based productivity suite that helps teams stay organized, collaborate, and get things done. It combines the features of traditional office productivity suites like Microsoft Office with cloud-based collaboration tools. It offers tools for creating documents, pres...

Mailbird

Mailbird is an email client and productivity app that helps users manage their emails and other online accounts. It integrates with popular services like Dropbox, Google Drive, OneDrive, and Slack, and provides an easier way to stay on top of emails, calendars, contacts, and task...

OpenProject

OpenProject is an open-source software application that helps organizations manage their projects and resources in a unified environment. It is designed for project teams of all sizes, from small to large. OpenProject provides a wide range of features, including task tracking, re...

Claws Mail

Claws Mail is an open-source, free email client with a modern user-friendly interface. It can be used with multiple accounts in various formats, including POP3 and IMAP. Claws Mail offers a range of features to make managing your emails easier, such as customizable filters, suppo...

Postbox

Postbox is an email management app (or website) designed to help users better organize and manage their emails. It provides powerful features for organizing, sorting, and searching emails, as well as advanced features for Gmail, Outlook, and other popular email services. Postbox'...

Geary

Geary is a free and open source email client that is designed to provide users with an efficient and intuitive way to manage their email accounts. Geary is built to make email management easier for users by providing a modern, intuitive interface that makes it easy to quickly acc...

Opera Mail

Opera Mail is an email client from the makers of the Opera web browser. It allows users to access their emails from any computer, without the need to install any additional software. It supports all major email services, including Gmail, Yahoo, and Outlook.com. Opera Mail also su...

The discontinued Opera Mail is no longer updated and is no longer supported, but the latest version, 1.0.1044, released in February 2016, can still be downloaded from the official website.

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Airmail

Airmail is an email application that provides users with a powerful, fast and efficient way to manage their email accounts. It is designed to be a streamlined workflow allowing users to easily manage multiple accounts and quickly access their messages, contacts, and attachments. ...

Mutt

Mutt is an open-source email client for Linux, BSD, and other UNIX-like systems. It is lightweight, highly configurable, and supports a wide range of protocols such as IMAP, POP, SMTP, and S/MIME. Mutt also allows users to read and send emails, as well as manage and organize thei...

Sylpheed

Sylpheed is a free, open-source, lightweight email and news client for Windows, Mac, Linux, and other Unix-like operating systems. It features an intuitive, user-friendly interface, support for multiple accounts, and a powerful filtering system. With Sylpheed, users can easily ma...

Microsoft Mail and Calendar

Microsoft Mail and Calendar is a free app and website that allows users to stay organized and connected. The app provides users with the ability to create and manage multiple email accounts, create and manage calendars for appointments and events, share calendars with others, and...

Polymail

Polymail is an app and website designed to help users keep up-to-date with the latest news and books. It offers personalized recommendations based on users’ interests and provides easy access to the latest content from leading publishers and authors. Polymail provides an intuitiv...

Kontact - KMail

Kontact - KMail is an email client and personal information manager developed by KDE and part of the Kontact Suite. It can be used as an email application, RSS reader, and contact manager. With Kontact - KMail, users can manage their emails, contacts, tasks, journals, and much mo...

Columba

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