MX Guarddog vs Mimecast Email Security

MX Guarddog8.7Visit Mimecast Email Security7.9Visit

Higher score MX Guarddog #3 in Email Anti-Spam Software 8.7/10 Free plan · 30-day trial Free planFree trial✓ 2 of 3 features Visit MX Guarddog

vs

Mimecast Email Security #6 in Email Anti-Spam Software 7.9/10 Pricing on request · 30-day trial Free trial✓ 3 of 3 features Visit Mimecast

• MX Guarddog fits best

  Budget-conscious domain owners

• Mimecast Email Security fits best

  Enterprises wanting mature secure email infrastructure

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Side by side

Feature	MX Guarddog 8.7/10 Visit ↗	Mimecast Email Security 7.9/10 Visit ↗
At a glance
Editor score	8.7	7.9
Ranking	#3 in Email Anti-Spam Software	#6 in Email Anti-Spam Software
Best for	Budget-conscious domain owners	Enterprises wanting mature secure email infrastructure
Pricing model	Free plan + paid	Paid
Starting price	$0.25/unit/mo	—
Free plan	✓ (best)	—
Free trial	30 days	30 days
Free trial length	30 days · no card needed	30 days · no card needed
Deployment	Cloud	Cloud
Platforms	Web	Web
Support	Email, Docs	Docs, Community
Integrations	3 integrations	300+ integrations
Built for	Solo, Small business, Mid-market	Small business, Mid-market, Enterprise
Features MX Guarddog 2/3 · Mimecast Email Security 3/3
Phishing detection	✓	✓
Malware scanning	✓	✓
Attachment scanning	Not checked yet	✓ (best)
Specs
Quarantine access	User_and_admin	User_and_admin
Supported mail platforms	Standard SMTP email servers for owned domains; not consumer Gmail or Hotmail accounts	Microsoft 365, Google Workspace, on-premises and hybrid email
Quarantine retention	7 days	Not checked yet
Deployment type	Cloud_gateway	Cloud_gateway
Our review
Pros	Spam, phishing, malware and virus scanning Quarantine access with message release and reports 168-hour outage spooling with TLS encryption	AI detection covers phishing, BEC, anomalies, malicious URLs, and attachments Supports Microsoft 365, Google Workspace, on-premises, and hybrid email Integrates with CrowdStrike, Okta, Splunk, and Microsoft Sentinel
Cons	Does not support consumer Gmail or Hotmail accounts Designed for owned domains using standard SMTP servers Free access requires visible website text links to earn tokens	Pricing requires contacting sales No perpetual free plan is offered Plan differences require comparing continuity, backup, and collaboration features
Our verdict	MX Guarddog is a hosted email security service for organizations, individuals and domain owners operating their own email servers. It routes incoming mail through MX Guarddog data centers, scans messages for spam, phishing, malware and… Read the review →	Mimecast Email Security is a cloud-based email protection service for organizations using Microsoft 365, Google Workspace, on-premises, or hybrid email. It targets teams that need centralized controls for phishing, business email… Read the review →

Strengths and trade-offs

• MX Guarddog — where it wins

  • Spam, phishing, malware and virus scanning
  • Quarantine access with message release and reports
  • 168-hour outage spooling with TLS encryption

  Where it doesn't

  • Does not support consumer Gmail or Hotmail accounts
  • Designed for owned domains using standard SMTP servers
  • Free access requires visible website text links to earn tokens

• Mimecast Email Security — where it wins

  • AI detection covers phishing, BEC, anomalies, malicious URLs, and attachments
  • Supports Microsoft 365, Google Workspace, on-premises, and hybrid email
  • Integrates with CrowdStrike, Okta, Splunk, and Microsoft Sentinel

  Where it doesn't

  • Pricing requires contacting sales
  • No perpetual free plan is offered
  • Plan differences require comparing continuity, backup, and collaboration features

• MX Guarddog8.7/10 · Free plan · 30-day trial

  A low-cost cloud gateway for domain owners who run their own email servers.

  Visit MX GuarddogFull verdict →
• Mimecast Email Security7.9/10 · Pricing on request · 30-day trial

  A broad email-security suite for organizations protecting complex mail environments.

  Visit MimecastFull verdict →