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SPECIFICTION
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MX Guarddog

mxguarddog.com

From $0.25/mo Free trial Web
Visit mxguarddog.com
Spec score 7.7 #12 of 28 in Email Anti-Spam Software

What it is

MX Guarddog is a hosted email gateway for standard SMTP servers serving owned domains. It scans incoming messages for spam, phishing, malware and viruses, quarantines offending mail, and forwards clean messages to the customer’s server. The service runs in the cloud, so it requires no hardware or software installation and no configuration changes to email clients or the server. Quarantine reports summarize stopped spam, and users can adjust report preferences; quarantine retention is seven days. If a customer’s server is unavailable, MX Guarddog says it holds mail for up to 168 hours and delivers it when the server returns. It can sync active addresses from Windows AD, LDAP or cPanel, and says it uses Transport Layer Security, including Perfect Forward Security, for email in transit. The listed per-address price is $0.25 per month; aliases are not charged. A free plan and 30-day trial are listed. The service is for web use and does not support consumer Gmail or Hotmail accounts.

Spec sheet

Support
End users are directed to contact their email administrator, while domain administrators can contact the MX Guarddog postmaster for technical help.Read 3 Oct 2026 · mxguarddog.com
Founded
2006Read 28 Sep 2026 · mxguarddog.com
Account syncing
MX Guarddog says it can automatically sync active email addresses from Windows AD, LDAP, or cPanel systems.Read 3 Oct 2026 · mxguarddog.com
Billing limits
The pricing page says there is no limit on the number of email addresses or messages a customer can receive.Read 3 Oct 2026 · mxguarddog.com
Email filtering
MX Guarddog scans incoming email for spam, phishing, malware, and viruses, quarantines offending messages, and forwards clean mail to the customer’s server.Read 3 Oct 2026 · mxguarddog.com
Encryption
The service says it uses Transport Layer Security encryption, including Perfect Forward Security, for email traveling over the Internet.Read 3 Oct 2026 · mxguarddog.com
Filtering technology
The company says its servers use mailbox activity to maintain a real-time blocklist that identifies and stops spam.Read 3 Oct 2026 · mxguarddog.com
Free service option
Customers can earn tokens by placing visible MX Guarddog text links on a website and use those tokens to pay invoices.Read 3 Oct 2026 · mxguarddog.com
Hosted service
The cloud based service requires no hardware or software installation and no configuration changes to email clients or the server.Read 3 Oct 2026 · mxguarddog.com
Intended customers
The company describes the service as suitable for organizations, schools, churches, police and government offices, and personal domain owners.Read 3 Oct 2026 · mxguarddog.com
Mail outage protection
If a customer’s server is unavailable, MX Guarddog says it spools mail for up to 168 hours and delivers it when the server is back online.Read 3 Oct 2026 · mxguarddog.com
Quarantine reports
The service sends users quarantine reports summarizing stopped spam, and users can adjust their report preferences.Read 3 Oct 2026 · mxguarddog.com
Service availability
The SLA commits to commercially reasonable efforts to maintain at least 99.95% uptime over a trailing 30-day period and offers a service credit if the commitment is missed.Read 3 Oct 2026 · mxguarddog.com

Plans and prices

Per Email Address Pricing $0.25 a month $0.25 per email address, per month; no charge for user aliases or domain aliases. No limit on email addresses or messages; free user aliases; unlimited quarantine storage Read 3 Oct 2026 · mxguarddog.com

Every MX Guarddog plan and price →

Strong points and limits

Strong points

  • Scans for spam, phishing, malware and viruses
  • Quarantine reports have adjustable preferences
  • Mail is held for up to 168 hours during outages
  • Syncs active addresses from Windows AD, LDAP or cPanel
  • No hardware or email-server installation required

Limits

  • Does not support consumer Gmail or Hotmail accounts
  • Quarantine retention is seven days
  • Costs $0.25 per email address per month

Who it suits

It suits organizations, schools, churches, public offices and personal domain owners using standard SMTP servers for owned domains. It is not for consumer Gmail or Hotmail accounts.

Verdict

MX Guarddog covers incoming-mail filtering, quarantine reporting and outage buffering for owned domains on standard SMTP servers. Its scope excludes consumer Gmail and Hotmail, and its listed per-address price is $0.25 per month.

Where Specifiction places it

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