Easy to access, filter and read mail logs, effective spam and malware filtering and business continuity features all make Securence a great product. Many configurable options make it easy to customize. CEO Fraud Protection has been working wonders to stop phishing emails, as well. Review collected by and hosted on G2.com.
The email encryption does work well but it relies on an Outlook plugin that seems to break easily. For what its worth, I've never found any Outlook plugin that does work reliably. Encrypted emails can also be sent from the web interface but this is probably too much to ask for your average corporate email user. Review collected by and hosted on G2.com.