This document compares the email server software IceWarp, Microsoft Exchange, and Kerio Connect. It provides a feature comparison table that shows which features are included, available separately, or part of the operating system for each product. The table compares features across areas like applications, protocols, web access, collaboration, instant messaging, mobility, security, administration and maintenance. IceWarp, Exchange and Kerio Connect all provide email, calendar and contacts functionality but they differ in advanced features and pricing models.

1. Exchange, Kerio Comparison
Choosing the Best Alternative to Microsoft Exchange Server
Feature Comparison
IceWarp® Server
Microsoft Exchange®
Kerio Connect
Exchange Alternative
Education
Business Solutions
Service Providers
Government

2. 2
Feature Comparison
Exchange Alternatives
ICEWARP
10.4
EXCHANGE
2010
KERIO
7.4
•
•
•
WebClient™
•
•
•
SmartAttach™ - Manage eMail Attachments
•
Notifier™ for WebClient
•
WebDAV WebFolders™
•
•
Microsoft Outlook® Support
•
•
•
Mozilla Thunderbird/Lightning Support
•
•
•
Native Desktop Client™
•
•
WebPhone™ - Integrated into WebClient™
•
WebIM™ - Integrated into WebClient™
•
WebSMS™ - Integrated into WebClient™
•
Applications
Cross-Browser Compatibility
Communication Protocols
SMTP/POP/IMAP/HTTP
•
ICEWARP
10.4
EXCHANGE
2010
KERIO
7.4
•
•
•
$
IM XMPP Server
•
VoIP SIP Server (or similar)
•
$
Voicemail, IVR, PBX
•
$
SMS Server
•
Built-In FTP Server
•
O
Built-In Web Server
•
O
Built-In SOCKS Proxy
•
Built-In WebDAV Server
•
•
•

3. 3
ICEWARP
10.4
EXCHANGE
2010
KERIO
7.4
Advanced/Basic/Mobile Interface
•
•
•
Tablet Support
•
Drag & Drop
•
•
•
Context Menus, Floating Windows, Tabs/Dock
•
•
WebIM™ Client
•
•
WebPhone™ Client
•
WebSMS™ Text Messaging
•
Auto Alias with Multiple Signature Support
•
SmartAttach™
•
Search Folders
•
•
Full GroupWare Functionality
•
•
Customizable Object Tags (beside flagging)
•
S/MIME Signing/Encryption
•
Multiple File Upload
•
Time Zone Management
•
•
Real-Time Delivery Reports
•
•
Personal Email Archive
•
Login Screen Rebranding
•
Microsoft Office® Integration
•
Web Access
IceWarp Server
Easier to Deploy
Easier to Manage
•
•
•
•

4. 4
ICEWARP
10.4
EXCHANGE
2010
•
•
Microsoft Outlook® 2007, 2010, 2013 Integration
•
•
•
Mac OS X Address Book, Calendar, Mail Support
•
•
•
•
•
Collaboration
Database Storage
Outlook for Mac®/Entourage® Connector
KERIO
7.4
Folder Synchronization Mapping
•
•
ACL Support
•
•
Groups and Public Folders
•
•
Private and Shared File Storage
•
•
Global Address List (GAL)
•
•
Availability (Free/Busy)
•
•
Meeting Invitations
•
•
ISchedule Support
•
•
Resource Scheduling
•
•
•
ICEWARP
10.4
EXCHANGE
2010
KERIO
7.4
•
$
Server to Server IM Communication
•
$
Central Archive & Message History
•
•
Configurable Global/Domain IM Roster
•
Gateways to AOL, MSN, GoogleTalk etc.
•
File Transfers
•
SMS Text Messaging
•
Email to Text Messages and vice versa
•
Text Message Archiving
•
Unified Messaging
Instant Messaging
$
•
•
•

5. 5
Mobility
Exchange ActiveSync® (for iOS, Android, Windows)
ICEWARP
10.4
EXCHANGE
2010
KERIO
7.4
•
•
•
OMA DS/SyncML (for Symbian, BlackBerry SyncJe)
•
CalDAV, CardDAV (for iPhone/iPad)
•
•
•
BlackBerry Enterprise Server Compatibility
•
Device Security Provisioning
•
Notes Synchronization Over-the-Air
•
Task Synchronization Over-the-Air
•
•
AutoDiscover Service
•
•
•
RemoteWipe
•
•
•
Instant Messaging from Smartphones
•
ICEWARP
10.4
EXCHANGE
2010
KERIO
7.4
•
$
•
Spam Protection
Built-In Anti-Spam (SpamAssassin, Bayesian)
Real-time Anti-Spam with RPD®
•
End User Control to Anti-Spam
•
•
•
DomainKeys
DKIM (Domain Keys Identified Mail)
•
•
CallerID/SenderID
Anti-Spoofing (SPF/SRS)
•
Tarpitting
•
Greylisting
•
Quarantine Reports
•
Challenge Response
•
•
•
•

6. 6
Security
Built-In Kaspersky® Anti-Virus (or similar)
ICEWARP
10.4
EXCHANGE
2010
KERIO
7.4
•
$
•
Mutliprotocol Virus Scanning
•
Support for 3rd Party Anti-Virus Engine
•
•
•
Extension Filters
•
•
•
Infected Files Quarantine
•
•
•
Intrusion Prevention System
•
Dynamic SSL Secured Destinations
•
•
•
Hard coded SSL Secured Destinations
SSL Cerificate Management
•
TCP/IP Tunnels
•
Certificate Authority - SSL Certificate Provider
•
Administration
Remote Administration Console
•
ICEWARP
10.4
EXCHANGE
2010
•
•
Integrated Web Admin
•
Command Line Scripting
•
Integrated Log Analyzer
•
Integrated File Manager
•
Application Layer (API)
•
•
Active Directory Synchronization
•
•
LDAP Synchronization
•
Single Sign-On (Kerberos/SASL)
•
One-Click Backup System & Data
•
SOAX Compliant Archiving
•
•
Clustering & Load Balancing
•
•
Minger (Distributed Domain E-mail, IM, VoIP)
•
ODBC Support
•
KERIO
7.4
•
•
•
•
•

7. 7
List Server Management
•
Remote ISP Accounts
•
RegEx Content Filters
•
Global/Domain Rules
•
•
System Monitor
•
•
Service Watchdog
•
Domain Gateway
•
Primary Domain Change
•
•
Domain POP
•
•
Multiple Mail Queues
•
•
Task Scheduler
•
•
OS Linux Version
•
•
Exchange Migration Tool
•
•
Migration from any IMAP server
•
Maintenance
1 Year Upgrade Protection
•
•
ICEWARP
10.4
EXCHANGE
2010
KERIO
7.4
•
$
•
1 Year Technical Support
•
Flexible User/Module Upgrades
•
Discounted Software Maintenance
•
• Feature is included in the product.
O Part of operating system. Limited configuration options and capabilities.
$ Available separately. Software requires installation on a separate server. Integration is limited.
Note: Microsoft Exchange 2010 Enterprise Edition features listed.
•

8. IceWarp North American HQ
6506 Loisdale Road
Suite 310
Springfield, VA 22150
Tel: (888) ICEWARP (432-9277)
Fax: (703) 563-9269
Local: (571) 481-4611
solutions@icewarp.com
www.icewarp.com
Enterprise Messaging for Companies of All Sizes
Communication
Collaboration
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