Microsoft Exchange is a popular email and calendaring server solution by Microsoft.
Starting from $4 per user/month
Best Kerio Connect Alternatives ranked by AI · updated May 2025
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Kerio Connect is a secure and reliable email and messaging solution for small to mid-sized businesses.
Price: Starting from $4.40/user/month
🎯 kerio.com/products/kerio-connect
Top 6 Kerio Connect alternatives
Zimbra Collaboration is a leading open-source email and collaboration platform.
Pros
- Robust email and collaboration features
- User-friendly interface
Cons
- Paid plans can be expensive for larger organizations
Free and paid plans available
Google Workspace is a suite of cloud computing, productivity and collaboration tools, software and products developed by Google.
Starting from $6/user/month
Zimbra is an enterprise-class email, calendar, and collaboration solution built for the cloud, both public and private.
Starting at $6 per mailbox per year
Microsoft Office 365 is a suite of productivity applications that includes Word, Excel, PowerPoint, Outlook, and more, offered as a subscription service.
Starting from $5 per user per month
IceWarp is a comprehensive email collaboration platform that offers email, messaging, and collaboration solutions for businesses of all sizes.
Varies based on the number of users and features selected
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