The Best Selling Server-based Anti-spam Solution

Here are just a few of the key reasons why GFI MailEssentials™ is currently the best selling server-based anti-spam solution:

Highest spam detection rate (99%) using Bayesian filtering
Lowest false positives through a patented automatic whitelist feature and a tailored ham & spam database
Allows users to review email marked as spam from a folder in their own inbox
Server-based, no client component
Unbeatable prices

Highest Spam Detection Rate (99%) using Bayesian Filtering

Bayesian filtering is widely acknowledged by leading experts and publications to be the best way to catch spam. For more information on that, see the links at the end of this document. A Bayesian filter uses a mathematical approach based on known spam and ham (valid email). This gives it a tremendous advantage over other spam solutions that just check for keywords or rely on downloading signatures of known spam. GFI's Bayesian filter uses an advanced mathematical formula and a data set which is custom-made for your installation: Spam data is continuously updated by GFI Software and is automatically downloaded by GFI MailEssentials; whereas the ham data (valid email) is automatically collected from your outbound mail. This means that the Bayesian filter is constantly learning new spam tricks, and spammers cannot circumvent the dataset used. This has resulted in 99+% spam detection rate, after the required automated two-week learning period.

In short, Bayesian filtering has the following advantages:

Looks at the whole spam message, not just keywords or known spam signatures
Learns from your outbound email (ham) and therefore reduces false positives greatly
Adapts itself over time by learning about new spam and new valid email
Dataset is unique to company, making it impossible to bypass
Multilingual and international
Hard to beat

The effectiveness of a Bayesian filter, and its omission by many products has caused some anti-spam companies to attempt to downgrade its importance. Don't be fooled: Bayesian filtering is the best way to detect spam. For more information, check out GFI Software's white paper at http://www.gfi.com/whitepapers/why-bayesian-filtering.pdf or these independent articles on Bayesian filtering:

Articles by Bayesian guru Paul Graham: "A Plan for Spam" and "So Far, So Good"
BBC report: "How to Spot and Stop Spam"
Other articles: "Sorting the Ham from the Spam", "Understanding Bayesian Analysis" and "Bayesian Spam Filtering".

Lowest False Positives using a Patented Automatic Whitelist and a Tailored Ham & Spam Database

GFI MailEssentials has the lowest false positive rate on the market. First, we use a patented automatic whitelist feature, which analyses your outbound mail and creates a whitelist (in other words, a list of email users from whom mail will never be marked as spam); second, we tailor our Bayesian filter dataset to your company's email habits, refining our ability to properly tag spam.

Allows Users to Review Email Marked as Spam from a Folder in their Own Inbox

With GFI MailEssentials, users can easily review mail marked as spam. Spam is forwarded to three subfolder: Bayesian, Header and Keyword; depending on which module tagged the mail as spam. From these subfolders to their inbox, users can easily check that all items marked as spam actually is spam.

We eliminate the cumbersome need for users to log in to an HTML website and review email marked as spam online; freeing your administrators from the additional burden of support.

Server-based, No Client Component

GFI MailEssentials installs on or in front of your mail server and does not require client software. Many anti-spam solutions include a client component, such as a set of Outlook forms that are required for users to manage their spam. Administrators then have to train and support end-users in the process. GFI MailEssentials is completely transparent to the user, requiring as little involvement by the user as is possible.

Unbeatable Pricing

GFI Software's experience in the development of content filtering/anti-spam software, has allowed us to write software that is very compact and easy to deploy. Because GFI Software sells thousands of units each month, we are able to keep the price very low.

The #1 Selling Server Anti-spam Solution

GFI MailEssentials is the most popular anti-spam server solution. We protect over 80,000 servers worldwide.

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