--- title: "Learn How Email Communication Can Be Secured With Email Gateway Example Features | DuoCircle" description: "Join the thousands of organizations that use DuoCircle Find out how affordable it is for your organization today and be pleasantly surprised.Interested in" image: "https://www.duocircle.com/images/og-default.png" canonical: "https://www.duocircle.com/content/email-gateway/email-gateway-example/" --- Content # Learn How Email Communication Can Be Secured With Email Gateway Example Features Join the thousands of organizations that use DuoCircle Find out how affordable it is for your organization today and be pleasantly surprised.Interested in [ Talk to an Expert → ](/contact/) [ See what we make ](/products/) ## Learn How Email Communication Can Be Secured With Email Gateway Example Features [Fix Your SPF Errors Now](/content/spf-permerror) _Email security remains vital for the continued operations of an organization_. Information compromised by malicious actors can cause tremendous harm to the finances and reputation of businesses. An **email gateway service** protects inbound as well as outbound emails and acts as a firewall for emails. [Email Gateways](/content/email-gateway) prevent attacks that use malware, spam or phishing. This article will look at how email gateways secure organizations by examining the most important email gateway example features. ![reliable smtp server](https://media.mailhop.org/duocircle/images/2019/02/email-phishing-protection.png) ### Secure Email Gateway Definition A simple [email gateway definition](/content/email-gateway/email-gateway-definition) is that email gateways are mail servers that protect an organization’s mail servers by serving as a filter. All incoming and outgoing emails pass through these secure servers, thus making them “Gateways” for a user’s email platform, this is the [definition of secure email gateway](/content/email-gateway/secure-email-gateway-definition). _Email gateways do not host the inbox of the user_. ### Understanding How Email Gateway Works An [SEG](https://searchsecurity.techtarget.com/feature/Introduction-to-email-security-gateways-in-the-enterprise) (Secure Email Gateway) is a software or device applied to monitor emails that are received as well as sent. They allow scanned emails to pass on to the internal servers of an organization if these emails do not contain spam or malware, this is [how email gateway works](/content/email-gateway/how-email-gateway-works). _SEGs quarantine emails that may be harmful. Emails are also encrypted to protect sensitive information_. ![smtp smart host service](https://media.mailhop.org/duocircle/images/2019/02/fake-email-delivery-failed.png)![email security services](https://media.mailhop.org/duocircle/images/2019/02/phish-protection-bundled.png) ### Some Email Gateway Example Features Following are some examples of features email gateways provide – #### Content Filtering The service scans email content, attachments and links to block suspicious content, malware and viruses. _It can also prevent information leak by members who are sabotaging their organization_. #### Email Archiving **SMTP archiving** or gateway archiving helps with compliance, as required by the law. #### Spam Filtering Email gateway services **filter spam** using advanced technologies that include heuristics or Bayesian-based prefiltering mechanisms. ### Email Gateway Free Services _Services of an email gateway can also be provided via free, open-source software_. Trial versions with full features are also available. Note that [free email gateway](/content/email-gateway/email-gateway-free) services may have basic or limited features. The frequency of [false positives](https://en.wikipedia.org/wiki/False%5Fpositives%5Fand%5Ffalse%5Fnegatives) with high-end services is also less. An alternative to free services is public cloud services that are affordable, reliable and have low maintenance. _Email Gateway services thus serve the vital function of preventing corporate data leakage and protecting mail servers from spam_. Ninety percent of all sent mail is spam mail, and therefore such services are essential in today’s digital communication. ![smtp smart host service](https://media.mailhop.org/duocircle/images/2019/02/fake-email-delivery-failed.png) ##### Join the thousands of organizations that use DuoCircle --- Find out how affordable it is for your organization today and be pleasantly surprised. [Outbound SMTP - Sign Up FREE](/email/outbound-smtp)Interested in our Partner Program for MSPs and VARs? Visit Our [MSP Partner Program](/msp-partner-program). ## Ready to talk? Same-day response from someone technical. We tell you yes or no quickly. If yes, we get to work. [Talk to an Expert→](/contact/)[See what we make](/products/) ```json {"@context":"https://schema.org","@type":"Organization","name":"DuoCircle LLC","url":"https://www.duocircle.com","logo":{"@type":"ImageObject","url":"https://www.duocircle.com/images/duocircle-logo.png"},"description":"DuoCircle is a portfolio of specialized email products covering protection, authentication, delivery, and routing. We deliver about 90% of category-leader capability at roughly half the price, backed by experts who own the outcome. 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