Security Gateway Reviews & Product Details

SecurityGateway™ protects all email platforms, including Microsoft Exchange, Microsoft 365, and others. Let our team of email security experts take the headache out of managing your company's email security needs. SecurityGateway utilizes the latest email threat detection technology and policy enforcement tools to ensure that good emails continue to flow to and from your users. Security Gateway can be deployed as an on-premise solution, or our cloud service can be deployed quickly and easily, allowing you to focus on other essential tasks. MSPs can also utilize our SaaS option to offer their clients a white-label, multi-tenant email security platform.

Seller

MDaemon Technologies

Discussions

Security Gateway Community

Languages Supported

German, English, French, Italian, Japanese, Portuguese, Russian, Spanish, Chinese (Simplified)

Solution Type

Best-of-Breed

Overview by

Alan Nauman

Pricing

Pricing provided by Security Gateway.

Hosted Security Gateway

$1.00

per_user Per Month

View More Pricing Information

Security Gateway Reviews FAQs

Generated using AI

Last updated: Nov 04, 2026

What is Security Gateway, and what problem is it built to solve?

Security Gateway is used as an email gateway that filters unwanted and potentially harmful messages before they reach users. It helps organizations reduce spam, phishing, and virus exposure while managing email flow.

What languages does Security Gateway support?

Security Gateway supports 8 languages: Chinese (Simplified), English, French, German, Italian, and others.

What company sizes and industries is Security Gateway the best fit for?

Security Gateway’s reviewer-reported fit clusters most around small businesses and mid-market organizations, with activity also represented in enterprise settings. The industries with the clearest presence include:

Company size: Small businesses, followed by mid-market organizations.
Industries: Information technology and computer/network security.
Industries: Accounting, retail, and insurance.

How long does it take to implement Security Gateway across a team?

Teams most often report getting Security Gateway live in less than a day, though implementation can take longer depending on the setup. The reported timing patterns include:

Time to go live	Relative frequency
Less than 1 day	Most common
Less than 1 month	Also reported
1–3 months	Less common

What customer support options does Security Gateway provide, and how do users find the overall support experience?

Support is available through channels such as chat, email/help desk, and phone support. The support experience is mixed: users describe knowledgeable, quick help, while some find support hours limited or response times slow.

Is Security Gateway considered safe and secure for handling data?

Security Gateway is used to protect email from threats such as spam, phishing, viruses, and spoofing. Users also describe relying on its filtering and quarantine controls to reduce unwanted messages and help protect against email-related data loss or leakage.

G2 reviews are authentic and verified.

Here's how.

Ryan M.

CEO Group Member

Small-Business (50 or fewer emp.)

4/7/2020

"Excellent Email Gateway Solution"

5/5

What do you like best about Security Gateway?

SecurityGateway does a great job filtering out unwanted emails and makes it easy to manage from either the web interface or the daily summary emails. The ability to merge my multiple email accounts in to one SG account allows for quick review of quarantined messages. I've been using SG since it's inception and have been a lifelong fan of AltN. Review collected by and hosted on G2.com.

What do you dislike about Security Gateway?

My only criticism of SG is the interface feels a little dated. It's perhaps time for a refresh and modernization. Review collected by and hosted on G2.com.

Response from Emma Washington of Security Gateway

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Thank you for your review Ryan, we appreciate your kind words! And thank your for your criticism of the interface as well, we are constantly updating SecurityGateway and will move forward with this in mind!

Verified User in Computer & Network Security

Small-Business (50 or fewer emp.)

4/7/2020

"Amazing filtering system!"

5/5

What do you like best about Security Gateway?

Its ease of use, extremely powerful and flexible (using Sieve Scripts), very secure, and it can be deployed in a few minutes. Review collected by and hosted on G2.com.

What do you dislike about Security Gateway?

No easy way to do clustering or redundancy, and no support for Microsoft SQL Server. Review collected by and hosted on G2.com.

Recommendations to others considering Security Gateway:

Test it out internally to adjust the filtering rules to your satisfaction before deploying to clients. The default rules are good but might not be OK for everyone. Review collected by and hosted on G2.com.

What problems is Security Gateway solving and how is that benefiting you?

When I applied the filtering for my Office365 customers, the amount of spam that my clients get has drastically dropped and I have less complaints from them! Review collected by and hosted on G2.com.

Response from Emma Washington of Security Gateway

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Thank you so much for your feedback, don't forget to visit https://www.g2.com/users/~?tab=my_rewards to claim your gift card!

See how Security Gateway improved

Harry E.

Mid-Market (51-1000 emp.)

5/28/2020

"17 years of use. It's a great product for our gateway application"

3.5/5

What do you like best about Security Gateway?

Ease of use. Easy interface. Detailed logging. Review collected by and hosted on G2.com.

What do you dislike about Security Gateway?

Support agreements should be included rather than an extra charge. Review collected by and hosted on G2.com.

Response from Emma Washington of Security Gateway

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Thank you for your feedback Harry!

Andre K.

Support Manager

Small-Business (50 or fewer emp.)

6/19/2019

"Safe, Secure, Advanced Security and Easy Setup"

4/5

What do you like best about Security Gateway?

Security Gateway is surprisingly easy to setup and configure but offer some of the latest and best security features compared to some of the most expensive Mail/Security platforms. The daily email reports and more advanced GUI reports available really help you access what is happening on the mail platform. Review collected by and hosted on G2.com.

What do you dislike about Security Gateway?

Some of the more advanced features is a bit more difficult to understand and configure but luckily Google and customers support is always close at hand. Review collected by and hosted on G2.com.

Recommendations to others considering Security Gateway:

It is really work while spending some time installing and evaluating Security Gateway for your email services. The Combination of the Mdaemon Mail Server and the Security Gateway is really all you need. Review collected by and hosted on G2.com.

What problems is Security Gateway solving and how is that benefiting you?

Since we started using Security Gateway, we have not had any viruses reach any of our end users. The AntiSpam features has also drastically reduced Spam and with additional Administrator options enable you too perfect the spam detecting rules. We also have great reporting on hand to analyse and monitor mail activity. Review collected by and hosted on G2.com.

Response from Emma Washington of Security Gateway

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Thanks so much for your comments Andre, we're glad Security Gateway is working well for you!

If you do run into any issues, you can also check out -

https://www.altn.com/Support/KnowledgeBase/

https://www.altn.com/Support/Literature/

https://www.youtube.com/c/MDaemonTechnologies

Jerry B.

Director of IT

Mid-Market (51-1000 emp.)

8/13/2019

"I recommend SecurityGateway to everyone!"

5/5

What do you like best about Security Gateway?

Installation was a breeze and it is super easy to maintain. No end user training required for my users and spam/virus detection are top notch. Review collected by and hosted on G2.com.

What do you dislike about Security Gateway?

Nothing that comes to mind, if you do find something wrong, their support is top notch. Review collected by and hosted on G2.com.

Recommendations to others considering Security Gateway:

Look no further, SecurityGateway will meet your needs. It is the Gateway to our exchange server and there is no other software that I would use. Review collected by and hosted on G2.com.

What problems is Security Gateway solving and how is that benefiting you?

Spam/Virus is a huge burden via email. Having to worry about things your end users might click on or open is something that was keeping me up at night. Since installing SecurityGateway that burden is lifted off my shoulders. I no longer worry as I know their software will protect my business. Review collected by and hosted on G2.com.

Response from Emma Washington of Security Gateway

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WOW - thank you Jerry! We're so glad that SecurityGateway so well for you!

Tim K.

Business Development

Small-Business (50 or fewer emp.)

3/25/2019

"A spam security solution that just works"

4.5/5

What do you like best about Security Gateway?

SecurityGateway is a great product for multiple domains. We are a small service provider who hosts are number of email domains for our clients. We like to use open source products as much as possible, but a mail gateway product that really works is hard to find. Couple that with the great user interface for each user that is linked directly to their back end email account, our users can use one login to manage both email and their spam gateway. Review collected by and hosted on G2.com.

What do you dislike about Security Gateway?

There is nothing at this time the I find in this product. Price is always a concern for a small business Review collected by and hosted on G2.com.

Response from Emma Washington of Security Gateway

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Awesome! So glad SecurityGateway works for you and your clients Tim!

Tim A.

Director of IT

Computer Networking

Mid-Market (51-1000 emp.)

6/21/2019

"good foundation, more tweak able with newer version still a learning curve to use"

3.5/5

What do you like best about Security Gateway?

for the most part it very "Ronco" with set and forget it. easy user configuration easy to stop and start the interface. and the one time i called support the tech was spot on and repaired the software asap. Review collected by and hosted on G2.com.

What do you dislike about Security Gateway?

it has a tendency to stop running. i'd say once every few months i need to restart the service. a better local user interface. local users have a hard time migration their interfaces. Review collected by and hosted on G2.com.

Response from Emma Washington of Security Gateway

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Thank you for your feedback Tim!

Anthony C.

System Engineer / Team Leader of Info Technologies

Enterprise (> 1000 emp.)

3/8/2019

"The best of the best.."

5/5

What do you like best about Security Gateway?

Very easy to manage yet very powerful email security and gateway. Review collected by and hosted on G2.com.

What do you dislike about Security Gateway?

No Single Sign on capability. This is important especially if we want to manage one entry point to our system. Review collected by and hosted on G2.com.

Recommendations to others considering Security Gateway:

In today’s business, email is a valuable service. I’ve used different email gateways, and Security gateway is the only application that actually provides all the tools I need to protect our mailboxes against spam, spoof, and malicious emails out there. It is equipped with all anti-spam tools at your disposal (SPF, DKIM, DMARC, and more). MDaemon has been around for more than 2 decades, for me, they are the most trusted company when it comes to email technologies. Review collected by and hosted on G2.com.

What problems is Security Gateway solving and how is that benefiting you?

Lots of annoying spam, spoof, and junk. Logging capability is awesome now, in v6 you can archive anything coming in and out of this program. 5 years ago, I replaced the company's old email gateway system with SG, and ever since, I've gotten compliments which I owe to all the unsung heroes who work diligently to provide us a better, spam-free mailbox, MDaemon / AltN! Review collected by and hosted on G2.com.

Response from Emma Washington of Security Gateway

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Thank you so much Anthony! As always, we appreciate your kind words!

Ghulam S.

Network Engineer

Information Technology and Services

Mid-Market (51-1000 emp.)

4/16/2019

"Cost effective security gateway software solution"

4.5/5

What do you like best about Security Gateway?

Security Gateway off curse very effective security filter in between our email server and end users that filters the emails and send the only that are valuable and reject the malicious emails that could be due to virus, spam or dns black, abuse and easy administration of such kind of attacks that can be easily manage by adding in white list or black list and at the end user can get the filtered emails that value their business. Review collected by and hosted on G2.com.

What do you dislike about Security Gateway?

Some times malicious emails cannot filter and sending them to end users. Every year renewal cost is also matter that is high and it should be go down. if we add sub domains in the main domain the filter difficult to process work. Review collected by and hosted on G2.com.

Response from Emma Washington of Security Gateway

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Thank you so much for your feedbak Ghulam! We're glad that Security Gateway continues to work so effectively for your business!

Verified User in Telecommunications

Mid-Market (51-1000 emp.)

12/2/2019

"Our Email Security shield"

5/5

What do you like best about Security Gateway?

- Ease of deployment and Setup

- The comfort of using and sending emails without considering any possible threat

- Anti Spam and filtration feature

- Efficient

- Anti-leak option

-Moderate price, not expensive, affordable Review collected by and hosted on G2.com.

What do you dislike about Security Gateway?

- The absence of Single Sign on feature

- Nothing else so far Review collected by and hosted on G2.com.

Recommendations to others considering Security Gateway:

Utilizing Security Gateway is sufficient to protect your emails from spams and threats so you do not need to integrate or use other software which means that you will save additional unnecessary expenses Review collected by and hosted on G2.com.

What problems is Security Gateway solving and how is that benefiting you?

- Data loss

- Spam

- Threats Review collected by and hosted on G2.com.

Response from Kevin Beatty M.S., IMC of Security Gateway

edit

Thank you for the review. Your SSO request has been sent to the development team.