Freedom251 › Email Anti-Spam Software
MX Guarddog
What MX Guarddog is
MX Guarddog is a cloud email gateway for standard SMTP servers used with owned domains. It scans incoming messages for spam, phishing, malware, and viruses, quarantines offending mail, and forwards clean messages to the customer’s server. It does not support consumer Gmail or Hotmail accounts. As a hosted service, it requires no hardware or software installation and no email-client or server configuration changes. When a customer’s server is unavailable, it can hold mail for up to 168 hours and deliver it once the server is back online. Users receive quarantine reports and can adjust report preferences; quarantine retention is seven days. The service 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. Pricing is $0.25 per email address per month, with no charge for aliases; a free option can be earned through visible MX Guarddog links on a website. A 30-day trial is listed.
Who it suits
It suits organizations, schools, churches, police and government offices, and personal domain owners using standard SMTP servers for owned domains. It is not for consumer Gmail or Hotmail accounts.
What it does well
- Filters spam, phishing, malware, and viruses.
- Requires no hardware or software installation.
- Can hold mail during server outages for up to 168 hours.
- No charge for user or domain aliases.
- Offers a free option through visible website links.
What to know first
- Does not support consumer Gmail or Hotmail accounts.
- Quarantine retention is seven days.
- Costs $0.25 per email address per month.
Limits
The listed quarantine retention is seven days. The service is for standard SMTP email servers for owned domains, not consumer Gmail or Hotmail accounts.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Per Email Address Pricing | $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 | $0.25 a month |
As mxguarddog.com lists them, read 3 Oct 2026. The maker's own page has the final word.
Getting started
- Open the MX Guarddog website.
- Use the 30-day trial or select the free service option or per-address plan.
- Connect the service to a standard SMTP server for an owned domain.
- If using Windows AD, LDAP or cPanel, sync active email addresses.
- Users can review quarantine reports and adjust report preferences.
Verdict
MX Guarddog offers hosted filtering and outage mail holding for standard SMTP servers on owned domains. Check the per-address monthly charge and seven-day quarantine retention when considering it.
Questions
How much does MX Guarddog cost?
The listed per-address plan costs $0.25 per email address, per month. User and domain aliases are not charged.
Is there a free plan or trial?
A free service option is available through tokens earned by placing visible MX Guarddog text links on a website. A 30-day trial is listed.
Which email platforms does it support?
It supports standard SMTP email servers for owned domains. Consumer Gmail and Hotmail accounts are not supported.
Can it protect email during a server outage?
It can spool mail for up to 168 hours and deliver it when the customer’s server is back online.
How long are messages kept in quarantine?
Quarantine retention is seven days.
Who can get support?
End users are directed to their email administrator. Domain administrators can contact the MX Guarddog postmaster for technical help.
Facts from MX Guarddog's own pages
- Account syncing
- MX Guarddog says it can automatically sync active email addresses from Windows AD, LDAP, or cPanel systems. · mxguarddog.com, 3 Oct 2026
- Billing limits
- The pricing page says there is no limit on the number of email addresses or messages a customer can receive. · mxguarddog.com, 3 Oct 2026
- 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. · mxguarddog.com, 3 Oct 2026
- Encryption
- The service says it uses Transport Layer Security encryption, including Perfect Forward Security, for email traveling over the Internet. · mxguarddog.com, 3 Oct 2026
- Filtering technology
- The company says its servers use mailbox activity to maintain a real-time blocklist that identifies and stops spam. · mxguarddog.com, 3 Oct 2026
- Founded
- 2006 · mxguarddog.com, 28 Sept 2026
- Free service option
- Customers can earn tokens by placing visible MX Guarddog text links on a website and use those tokens to pay invoices. · mxguarddog.com, 3 Oct 2026
- Hosted service
- The cloud based service requires no hardware or software installation and no configuration changes to email clients or the server. · mxguarddog.com, 3 Oct 2026
- Intended customers
- The company describes the service as suitable for organizations, schools, churches, police and government offices, and personal domain owners. · mxguarddog.com, 3 Oct 2026
- 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. · mxguarddog.com, 3 Oct 2026
- Quarantine reports
- The service sends users quarantine reports summarizing stopped spam, and users can adjust their report preferences. · mxguarddog.com, 3 Oct 2026
- 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. · mxguarddog.com, 3 Oct 2026
- Support
- End users are directed to contact their email administrator, while domain administrators can contact the MX Guarddog postmaster for technical help. · mxguarddog.com, 3 Oct 2026
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