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The best email security gateways: A buyer's guide

Last updated:January 2016

Editor's note

Email security gateways secure organizations by preventing malicious emails from reaching their destinations. They generally do this by quarantining or blocking inbound and outbound emails that contain malicious content -- such as malware, spam and phishing attacks – or that violate enterprise policies. Nearly every organization can benefit from the deployment of an email security gateway -- be it as a standalone or virtual appliance, or installed as software directly on the mail server, local server in the data center or in the public or private cloud.

In addition to its standard email security function, these gateways often deliver additional benefits to organizations, including compensating for weak or missing client security controls and delivering email encryption services to protect the confidentiality and integrity of emails in transit. Some email security gateways even offer data loss prevention capabilities to thwart the -- accidental or deliberate -- leakage of sensitive information via email messages.

In this buyer's guide, readers will learn how the best email security gateways are protecting enterprises. It also lays out what enterprises need to know before making an investment in an email security gateway product, and presents direct comparisons and overviews of some of the best email security gateways on the market today.

1The business case for an email security gateway

Discover the benefits and ways email security gateways boost messaging security for the enterprise. This article offers specific examples on how email security gateway products can be beneficial to enterprise customers of all sizes.

2Procuring the right email security gateway

Questions need to be asked before an enterprise makes a purchasing decision for an email security gateway. Consider the following criteria and steps as part of any evaluation when looking to find the best email security gateway product for your organization's needs.

3The top email security gateways compared

What makes an email security gateway product right for a particular enterprise? Here we compare several of the best email security gateway vendors and review the pros and cons of their products to help you decide which might be right for your organization.

4A who's who of the best email security gateway vendors

Email security gateways are essential for securing corporate messaging and networks. Here's a look at some of the best email security gateway products in the industry.

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