Protect your Exchange users from current and future Email attacks and Email viruses with Mail Essentials. Mail Essentials for Exchange is an email content checking and anti-virus gateway for Exchange server (2000 & 5.5) that removes all types of email-borne threats before they can affect your email users. Viruses, spam, dangerous or offensive attachments & content (such as Word macros, HTML scripts) can be removed/reviewed before they reach your mail server. In addition Mail essentials also has server-based PGP.