
| Feature | IMail | IMail Premium | Microsoft Exchange ActiveSync® | IMail Anti-virus powered by BitDefender® | IMail Anti-virus powered by Symantec™ | IMail Anti-virus powered by Commtouch® | Commtouch® Zero-Hour Virus Protection | 
| Solid, scalable, standards-based Email Server with Web Mail and List Server | 
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| Basic anti-spam with blacklists, Bayesian filters, phrase filters, and more. | 
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| Basic security with SMTP authentication, dictionary attack sensing, and anti-hammering. | 
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| Secure Instant Messaging is a network-based Client/Server system with Smart Tag support. | 
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| DomainKeys / DKIM is a domain-level e-mail authentication standard that uses public/private key encryption and DNS to prove e-mail legitimacy. | 
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| IMail Collaboration - Microsoft® Outlook contacts to transfer and sync with IMail Web Messaging and mobile devices. | 
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| Premium Anti-spam -by Commtouch Advanced Security Daemon (aka ctasd™) a plug-and-play email-borne spam and malware outbreak detection daemon. | 
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| Premium Anti-spam by Commtouch's GlobalView™ Mail Reputation Service (IP Reputation) fights unwanted mail at the perimeter, reducing incoming messages at the entry-point, before these messages enter the network. | 
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| Microsoft Exchange ActiveSync® allows synchronizing their e-mail, contacts & calendars with their mobile devices. | 
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| IMail Anti-virus powered by BitDefender®. | 
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| IMail Anti-virus powered by Symantec™ | 
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| IMail Anti-virus powered by Commtouch® | 
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| Commtouch® Zero-hour Virus Protection | 
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