Zimbra

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.

21 Alternatives To Zimbra

Agile CRM

Agile CRM (Customer relationship management) features modern CRM with marketing automation, social suite & web analytics, allowing small businesses to sell and market like the Fortune 500.

Airmail

Airmail is a lightweight and lightning fast mail client for Mac.
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Apple Mail

There’s big news attached.

Campaigner

Is your email marketing failing to produce the revenue you expect? Learn how to send email campaigns that deliver results with Campaigner. Try our free 30-day trial today.

Front App

multi-channel inbox service for collaborative teams
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G Suite

Google’s encompassing suite of cloud-based business apps.
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Gmail

Gmail is available across all your devices Android, iOS, and desktop devices. Sort, collaborate or call a friend without leaving your inbox.
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Jostle

A new kind of employee intranet that drives engagement & workplace culture. Achieves social participation in work relevant way. Participation rates are over 85%.
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MailChimp

MailChimp is the best way to design, send, and share email newsletters.

Mailbird

Mailbird is the best email client for Windows 7, 8 and 10
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Outlook

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

The Power Email App for busy professionals, like you.
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ProtonMail

Secure email with absolutely no compromises. Get your free encrypted email account today.

Roundcube

Web-based IMAP email client

SpamTitan by TitanHQ

Comprehensive Email Protection. 99.99% Spam Detection. Blocks phishing, viruses, malware and other email threats.
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Unily

Unily is a cloud-based intranet solution designed by SharePoint consultancy BrightStarr.

Zoho Campaigns

Zoho Campaigns is an email marketing tool with CRM & social media integration to help you create, send and track effective email campaigns.

Zoho Connect

Zoho Connect is a team collaboration software that helps teams ideate, discuss, and work together, from any place, on any device.
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Zoho Mail

Zoho Mail is a webmail service built with the needs of a modern business in mind.
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eM Client

eM Client is a Windows-based email client for sending and receiving emails, and managing calendars, contacts and tasks.

iRedMail

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