Afterlogic Webmail Alternatives & Competitors

Web-based IMAP email client.

Key Roundcube features:

Open Source User-Friendly Interface Extensibility Security

Open Source

Starting with version 0.9.8, mu provides an emacs-based e-mail client which uses mu as its back-end: mu4e.

Key Mu4e features:

Speed Integration with Emacs Lightweight Customization

The #1 email warming service to improve your deliverability by generating realistic and meaningful engagement to your emails. Easy-to-use solution to help you land in the main inbox instead of the spam folder. .

Key MailReach.co features:

Deliverability Improving Email Warming Meaningful Warming Content Smart Warming Algorithm

Visit website paid $19.5 / Monthly (Pro)

RainLoop is a web based email client.

Key Rainloop features:

User-Friendly Interface Lightweight No Database Required Support for Multiple Email Providers

Open Source

SOGo is groupware server with a focus on scalability and open standards.

Key SOGo features:

Open Source Multi-Platform Support Integration Web Interface

Open Source

Zimbra is trusted by over 500 million users to increase productivity with a complete set of collaboration tools while maintaining total control over security and privacy.

Key Zimbra features:

Open Source Cost-Effective Scalability Feature-Rich

Designed for those who settle only for the best — CrossBox is beautiful, dazzlingly fast, and comes with advanced features that provide you and your team with cutting-edge communication technologies.

Key CrossBox features:

Email Chat Files Contacts

paid €6.3 / Monthly

Mailspring is a mail client for Mac, Windows and Linux.

Key Mailspring features:

User Interface Unified Inbox Advanced Search Customization

Open Source

Mailpile is a modern, fast web-mail client with user-friendly encryption and privacy features.

Key Mailpile features:

Privacy Focus Open Source User Control Feature-Rich

Open Source

Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.

Key Microsoft Outlook features:

Integration with Microsoft Ecosystem Calendar and Task Management Strong Security Features Customizable Interface

Horde Groupware is a free, enterprise ready, browser based collaboration suite.

Key Horde features:

Open Source Wide Range of Features Web-Based Interface Active Community Support

Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!

Key Thunderbird features:

Free and Open Source Customization Cross-Platform Robust Security

SquirrelMail is a standards-based webmail package written in PHP.

Key Squirrelmail features:

Lightweight Compatibility Security Simplistic Interface

Open Source

eM Client is a fully-featured email client for Windows and macOS with a clean and easy-to-use interface. eM Client also offers features for calendars, tasks, contacts, notes, and chat. .

Key eM Client features:

Email Calendar Task management Events

freemium