Best iMail Alternatives & Competitors in 2024

Microsoft Exchange Server is a messaging and collaborative software product developed by Microsoft.

hMailServer is a free e-mail server for Microsoft Windows.

Stop chasing your clients for documents! Easily request files, documents, forms & signatures from your clients – set a due date and save hours as your requests are returned to you effortlessly.

Try for free paid Free Trial $17.99 / Monthly (Basic)

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.

Axigen is an integrated email, calendaring & collaboration platform, built on a Linux mail server technology.

A fully fledged, free email server solution, an open source project (GPL v2).

Open Source

Google's encompassing suite of cloud-based business apps.

An open source mailserver suite.

Open Source

MailEnable is a Windows based mail server and email server program that is packed with the state of the features and functions like antivirus and spam filtering system, webmail management system, cardDAV, CalDAV and much more.

Microsoft Office is an office suite of desktop applications, servers, and services for the Microsoft Windows and OS X operating systems.

Is a collaboration suite (messaging and groupware).

Sharing & communication software for business

OpenChange aims to provide a portable Open Source implementation of Microsoft Exchange Server and...

Web-based IMAP email client

Open Source