Domain Level, Cloud-based Spam Filtering that Just Works.


  • >99% Accuracy
  • As low as $0.55 / user.
  • Unlimited Emails
  • Quick 2-Minute Setup
Brief 2

>99% Accuracy.

  • Constantly Updated Detection Engines
  • Proven Technology

Cloud-Based. Nothing to Install.

  • Super Simple

    All email filtering takes place on our servers, in the cloud.

  • Easy Setup

    Just submit the signup form and point your MX record to us. All your email will then be filtered automatically. For more details, see How It Works.

MX Guardian Features

Don't let our prices fool you. We have a long list of available features - without any hidden fees.


Nothing to install or maintain

All email filtering takes place on our servers, in the cloud. We are constantly updating our detection engines so you don’t have to.


Block threats before they reach your network

Spam, viruses, and phishing scams are all safely quarantined on our servers so they don’t waste your valuable bandwidth.


Message queueing

In the event your server is down, we prevent messages from bouncing by keeping them in our queue until your server is back online.


Real-time reports and graphs

Analyze trends and see the effectiveness of our filtering technology at any time. Or if you choose, have a daily report sent straight to your inbox.


User quarantine management

Users can safely review their quarantined messages from our web-based control panel and release messages if necessary.


Custom whitelists & blacklists

Users can block or allow sender addresses and domains by adding them to a whitelist or blacklist. In addition, administrators can define domain-wide lists.


LDAP syncronization

Synchronize your user list with any LDAP-compatible server such as Microsoft Active Directory so you don’t need to manually add & remove users.


Email server monitoring

Receive instant alerts via SMS or email when your mail server is not responding.


Pass-through authentication

Users can login to our control panel using their email password. We support POP3, IMAP, and LDAP pass-through authentication.


Pricing is based on the number of users in your account.

  • Users
    Price per User per Month
  • 1
  • 2-4
  • 5-9
  • 10-24
  • 25-49
  • 50-99
  • 100-249
  • 250-499
  • 500-999
  • 1000-2999
  • 3000+

Everything is included!

  • Unlimited messages
  • Free daily quarantine report
  • Admin control panel
  • User-level control panel access
  • No contract, cancel anytime
  • No overages



Get all features FREE for 30 days

Get started in 2 minutes!

No contracts. Cancel anytime.
No payment info required.