--- title: "How Email Gateway Works And How Knowing It Can Help You Select The Best One For You! | 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-service/how-email-gateway-works/" --- Content # How Email Gateway Works And How Knowing It Can Help You Select The Best One For You! 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/) ## How Email Gateway Works And How Knowing It Can Help You Select The Best One For You! [Fix Your SPF Errors Now](/content/spf-permerror) _Email-borne threats can wreak havoc on your computer and compromise confidential data_. An **email gateway solution** acts as a protective feature by scanning your outbound and inbound emails for malicious content. ![email gateway service](https://media.mailhop.org/duocircle/images/2019/02/brand-forgery-components.png) ### What Is A Gateway? In simple terms, _a gateway is a networking solution that allows the flow of data from one discrete network to another._ They are different from switches or routers, as they communicate using multiple protocols. All data, inbound or outbound have to communicate with the gateway to use the appropriate routing paths. _Routers can also work as gateway devices on computer networks_. [Email gateway free](/content/email-gateway-service/email-gateway-free) of cost?: Yes, though most of the organizations pay for [email gateway solutions](/content/email-gateway-service/email-gateway-solution), you can also try email gateway available free of cost, that is provided by some companies on a trial basis, to begin with. ### What Is An Email Gateway? _Email is a flow of data from one network to another._ Hence, it has to communicate with the gateway before passing through. An [email gateway service](/content/email-gateway-service) helps in scanning inbound and outbound emails for **malicious content** before allowing it to move from one network to the other. An email gateway routes emails, manage email addresses or domain changes and takes care of activities like inbound and outbound routing and traffic-splitting. A simple [email gateway definition](/content/email-gateway-service/email-gateway-definition) would be comparing the email gateway to the security checks we have in our office and residential complexes. _The security does not allow entry to unauthorized persons_. Similarly, the **email gateway solution** filters out the messages containing malicious content and prevents it from penetrating your network. _Understanding the different types of email gateway services can help you comprehend how email gateways work._ #### Email Encryption Gateways One of the ideal methods of securing data is encryption. _The **email encryption gateway** is an email server that encrypts outbound emails and decrypts inbound emails_. Generally, the [email encryption gateway](https://www.techopedia.com/definition/30542/email-encryption-gateway) is between the enterprise network and the external media such as the internet. Besides encrypting and decrypting emails, these gateways act as spam blockers and scan for viruses as well. #### Email Security Gateways _Email security gateways act as a firewall by preventing emails with malicious content from reaching their intended recipients_. It offers a robust framework of technologies that scan both inbound and outbound emails for all kinds of malicious content. With [email filtering service](/content/email-gateway-service/email-filtering-service) being one of the primary security features of an [email security gateway](https://www.forcepoint.com/cyber-edu/secure-email-gateway), the other security features include spam filtering, email archiving, and malware or virus blocking. An **email security gateway** works by placing the malicious emails into quarantine or by blocking senders of such emails. #### Cloud-Based Email Gateways Since most of the organizations and individuals use cloud-based servers for storing data, there is a need for cloud-based email gateways to protect such data. _Cloud-based email gateways prevent insidious threats such as phishing emails, email spam, and ransomware_ by using multiple layers of protection such as sandboxing, content defense, and other link protection technologies. ![email gateway service provider](https://media.mailhop.org/duocircle/images/2019/02/protect-company-from-phishing.png)![free email gateway service](https://media.mailhop.org/duocircle/images/2019/02/Advanced-Threat-Defense-office-365.png) ### Why Do You Need Email Gateway Service? _Emails are the most widespread means of official and personal communication today._ Emails can contain malware, viruses, **phishing attacks**, spam, and other malicious content that can lead to compromising your confidential data. Email gateways provide the ideal form of [email security](/content/email-gateway-service/email-security), thereby protecting you and your organization from cyber attacks through emails. _Don’t fret if your budget doesn’t allow for paid services; there are even reliable email gateways free of cost readily available for you_. ##### 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. Trusted by 50,000+ organizations since 2014.","subOrganization":[{"@type":"Organization","@id":"https://www.wikidata.org/wiki/Q138898167","name":"DMARC Report","url":"https://dmarcreport.com"},{"@type":"Organization","@id":"https://www.wikidata.org/wiki/Q138897474","name":"AutoSPF","url":"https://autospf.com"},{"@type":"Organization","@id":"https://www.wikidata.org/wiki/Q138897912","name":"Phish Protection","url":"https://www.phishprotection.com"}],"sameAs":["https://www.linkedin.com/company/duocircle","https://x.com/duocirclellc","https://www.facebook.com/duocirclellc","https://www.g2.com/products/phish-protection-by-duocircle/reviews","https://github.com/duocircle","https://www.crunchbase.com/organization/duocircle-llc"],"contactPoint":{"@type":"ContactPoint","contactType":"customer support","url":"https://support.duocircle.com"},"knowsAbout":["Email Security","Email Authentication","SPF","DKIM","DMARC","Phishing Protection","Spam Filtering","SMTP Relay","Email Deliverability","Email Forwarding"]} ``` ```json {"@context":"https://schema.org","@type":"WebSite","name":"DuoCircle LLC","url":"https://www.duocircle.com","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. Trusted by 50,000+ organizations since 2014.","publisher":{"@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. Trusted by 50,000+ organizations since 2014.","subOrganization":[{"@type":"Organization","@id":"https://www.wikidata.org/wiki/Q138898167","name":"DMARC Report","url":"https://dmarcreport.com"},{"@type":"Organization","@id":"https://www.wikidata.org/wiki/Q138897474","name":"AutoSPF","url":"https://autospf.com"},{"@type":"Organization","@id":"https://www.wikidata.org/wiki/Q138897912","name":"Phish Protection","url":"https://www.phishprotection.com"}]}} ``` ```json [{"@context":"https://schema.org","@type":"WebPage","name":"How Email Gateway Works And How Knowing It Can Help You Select The Best One For You!","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 ","url":"https://www.duocircle.com/content/email-gateway-service/how-email-gateway-works/","speakable":{"@type":"SpeakableSpecification","cssSelector":[".page-answer",".duo-rich-text p:first-of-type"]},"dateModified":"2023-07-27T11:43:02.000Z","datePublished":"2019-07-22T18:28:45.000Z"},{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"DuoCircle","item":"https://www.duocircle.com/"},{"@type":"ListItem","position":2,"name":"How Email Gateway Works And How Knowing It Can Help You Select The Best One For You!","item":"https://www.duocircle.com/content/email-gateway-service/how-email-gateway-works/"}]}] ```