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Open-Xchange vs iMail Server comparison

Progress Software and Open-Xchange are both solutions in the Email Applications category. Progress Software is ranked #21, while Open-Xchange is ranked #11. Progress Software holds a 0.5% mindshare in EA, compared to Open-Xchange’s 7.2% mindshare. Additionally, 100% of Open-Xchange users are willing to recommend the solution.
iMail Server
  • 103 Views
  • 103 Comparison Views
Open-Xchange
Read 2 Open-Xchange reviews
  • 1,507 Views
  • 1,507 Comparison Views
100% willing to recommend
 

Comparison Buyer's Guide

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Executive Summary
We performed a comparison between Open-Xchange and iMail Server based on real PeerSpot user reviews.

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To learn more, read our detailed Email Applications Report (Updated: January 2026).
Buyer's Guide
Email Applications
January 2026
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Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Categories and Ranking

iMail Server
Ranking in Email Applications
21st
Average Rating
0.0
Number of Reviews
0
Ranking in other categories
No ranking in other categories
Open-Xchange
Ranking in Email Applications
11th
Average Rating
8.0
Number of Reviews
2
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of January 2026, in the Email Applications category, the mindshare of iMail Server is 0.5%, up from 0.0% compared to the previous year. The mindshare of Open-Xchange is 7.2%, up from 4.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Email Applications Market Share Distribution
ProductMarket Share (%)
Open-Xchange7.2%
iMail Server0.5%
Other92.3%
Email Applications
 

Featured Reviews

Use iMail Server?
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DS
davidstrom
Owner at David Strom Inc.
Collaborate Using Open Xchange App Suite
A flexible unified communications service for collaborative workgroups that can share files, import and export contacts and calendars from a wide variety of data sources and Web services, including Facebook, LinkedIn, Twitter and Google’s Gmail. Entirely open-source based Price: Varies…
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881,114 professionals have used our research since 2012.
 

Top Industries

By visitors reading reviews
No data available
Computer Software Company
14%
Comms Service Provider
11%
Government
8%
Manufacturing Company
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
No data available
 

Comparisons

No data available
Microsoft Exchange vs Open-Xchange Logo
Microsoft Exchange vs Open-Xchange
Compared 32% of the time
Microsoft Exchange Online vs Open-Xchange Logo
Microsoft Exchange Online vs Open-Xchange
Compared 27% of the time
Zimbra Collaboration vs Open-Xchange Logo
Zimbra Collaboration vs Open-Xchange
Compared 22% of the time
Google Workspace vs Open-Xchange Logo
Google Workspace vs Open-Xchange
Compared 5% of the time
IceWarp vs Open-Xchange Logo
IceWarp vs Open-Xchange
Compared 3% of the time
More Open-Xchange Competitors
 

Product Reports

Buyer's Guide
Email Applications
January 2026
iMail Server reportDownload iMail Server product report
Buyer's Guide
Email Applications
January 2026
Open-Xchange reportDownload Open-Xchange product report
 

Also Known As

Progress iMail Server
No data available
 

Overview

iMail Server is a complete email messaging solution designed for small to mid-sized businesses and is backed by the industry’s best technical support team.
iMail Server is a complete Windows email server with SMTP, POP, IMAP, LDAP, and List Server. iMail users can send and receive email using any standards-based client, including Microsoft Outlook® and Outlook Express®. Or, users can access email via iMail’s customizable Web messaging.
Admin Friendly, Team Builder, Adaptable,

Progress Software
A cost effective messaging and collaboration solution based on open source components.
Open-Xchange
 

Sample Customers

Keystrokes Transcription Service, Inc, Korean Air, Nascar, WebMD
1&1, Host Europe, KPN, Ziggo, namecheap, Strato, Network Solutions
Buyer's Guide
Email Applications
January 2026
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Find out what your peers are saying about Google, Microsoft, Amazon Web Services (AWS) and others in Email Applications. Updated: January 2026.
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881,114 professionals have used our research since 2012.
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We monitor all Email Applications reviews to prevent fraudulent reviews and keep review quality high. We do not post reviews by company employees or direct competitors. We validate each review for authenticity via cross-reference with LinkedIn, and personal follow-up with the reviewer when necessary.