The closest MailGuard alternatives are Fortra Email Security & Anti-Phishing, SmarterTools SmarterMail and MX Layer Outbound Email Filtering. Picking a MailGuard alternative comes down to fit: Email Security Platforms coverage, your environment, your integrations and your budget. So each option below shows what it covers, how it deploys, its pricing model and the company behind it.
37 alternativesClosest matches: Fortra Email Security & Anti-Phishing, SmarterTools SmarterMail, MX Layer Outbound Email FilteringPage updated Nov 2026
The product
by MailGuard
Cloud-based managed email filtering against phishing, ransomware & BEC.
MailGuard is a commercial Email Security Platforms solution made by MailGuard. The closest matches by shared tags and NIST CSF 2.0 coverage are Fortra Email Security & Anti-Phishing, SmarterTools SmarterMail, MX Layer Outbound Email Filtering, PowerDMARC Hosted DMARC, and SpamTitan Gateway. All 37 alternatives on this page are ranked the same way.
These 8 solutions overlap most with MailGuard. Each row says what the product does and, when the overlap is big enough, which capabilities it shares.
Email security platform protecting against phishing, BEC, and data loss
Key features: DMARC email authentication and enforcement, Business email compromise detection, Spear phishing protection, Account takeover detection, Data loss prevention for sensitive data
View Fortra Email Security & Anti-PhishingFortra Email Security & Anti-Phishing alternatives
Email security platform protecting against phishing, BEC, and data loss
Email server with antispam, antivirus, and security features for Linux/Windows
Outbound email filtering platform for spam prevention and IP reputation mgmt
Cloud-managed DMARC record hosting with DNS-free policy management.
Email security gateway appliance for spam/malware filtering and mail flow control.
Email authentication platform implementing DMARC, SPF, DKIM, and BIMI protocols
DMARC monitoring tool for email deliverability and brand protection
Email filtering service protecting against spam, viruses, and phishing.
Platform automating DMARC compliance via record mgmt, reporting & policy enforcement.
Domain scanner & compliance tool for Gmail, Yahoo & Microsoft DMARC requirements.
Domain email-sending monitoring with DMARC/SPF/DKIM inventory, alerts and guided DNS
Cloud email security for Microsoft 365 and Google Workspace applications
Email security platform blocking spam, phishing, malware, and viruses
DMARC implementation & monitoring tool to prevent domain spoofing attacks
MX-based email security platform using AI to block spam, phishing & malware
DMARC management platform for email authentication and domain protection
DMARC management platform for email authentication and domain protection
Automated DMARC enforcement platform for domain protection and email security
Comprehensive email security & human risk mgmt platform with AI-powered protection
Managed Proofpoint email security service for phishing & BEC protection.
Cloud-based email security service that blocks spam, phishing, malware, and fraud attacks
Cloud-based email security platform protecting against phishing & ransomware
Composable email infrastructure platform with threat detection and AI ops.
Email gateway that blocks spam, phishing and malware before inbox delivery, made
Cloudflare Cloud Email Security is a cloud-based email protection service that safeguards organizations against phishing, malware, spam, and other email-borne threats through integrated threat detection and prevention capabilities.
Cloud-based email security platform protecting against phishing, ransomware, BEC
AI-powered email security platform for threat detection and compliance
Email security gateway protecting against spam, phishing, viruses & data leaks
Cloud-native email security platform with SEG and API-based protection
Enterprise email security platform for cloud and on-premise deployments
AI-driven email security platform for Microsoft 365 inbound/outbound threats
Email security platform with AI threat detection, BEC protection, and DLP
DMARC visualization tool for email domain protection and authentication
Carrier-grade outbound spam & botnet detection solution for ISPs.
AI-powered anti-phishing platform for Microsoft 365 & Google Workspace.
Common questions when weighing alternatives to MailGuard.
The closest matches to MailGuard by shared tags and NIST CSF 2.0 coverage are Fortra Email Security & Anti-Phishing, SmarterTools SmarterMail, MX Layer Outbound Email Filtering, PowerDMARC Hosted DMARC, and SpamTitan Gateway. All of them are Email Security Platforms products.
This page shows 37 alternatives to MailGuard, all in the Email Security Platforms category. Each one is matched on shared tags and NIST CSF 2.0 areas, and the closest matches rank first.
MailGuard is a commercial Email Security Platforms product. It needs a paid license or subscription. Only commercial alternatives are listed here. Free and open source products are under /free.
MailGuard is a Email Security Platforms product in the Email & Messaging Security category. You can compare it with the 37 other Email Security Platforms products on this page.
Email server with antispam, antivirus, and security features for Linux/Windows
Key features: 10 listed. See them on the SmarterTools SmarterMail page.
Shares 3 capabilities with MailGuard: Spam Prevention, DKIM, SPF
View SmarterTools SmarterMailSmarterTools SmarterMail alternativesMailGuard vs SmarterTools SmarterMail
Outbound email filtering platform for spam prevention and IP reputation mgmt
Key features: 10 listed. See them on the MX Layer Outbound Email Filtering page.
Shares 3 capabilities with MailGuard: Spam Prevention, DKIM, SPF
View MX Layer Outbound Email FilteringMX Layer Outbound Email Filtering alternativesMailGuard vs MX Layer Outbound Email Filtering
Cloud-managed DMARC record hosting with DNS-free policy management.
Key features: 5 listed. See them on the PowerDMARC Hosted DMARC page.
Shares 3 capabilities with MailGuard: Spam Prevention, DKIM, SPF
View PowerDMARC Hosted DMARCPowerDMARC Hosted DMARC alternativesMailGuard vs PowerDMARC Hosted DMARC
Email security gateway appliance for spam/malware filtering and mail flow control.
Key features: 10 listed. See them on the SpamTitan Gateway page.
Shares 3 capabilities with MailGuard: Spam Prevention, DKIM, SPF
View SpamTitan GatewaySpamTitan Gateway alternativesMailGuard vs SpamTitan Gateway
Email authentication platform implementing DMARC, SPF, DKIM, and BIMI protocols
Key features: 10 listed. See them on the Red Sift OnDMARC page.
View Red Sift OnDMARCRed Sift OnDMARC alternativesMailGuard vs Red Sift OnDMARC
DMARC monitoring tool for email deliverability and brand protection
Key features: 5 listed. See them on the INKY DMARC Monitoring page.
View INKY DMARC MonitoringINKY DMARC Monitoring alternativesMailGuard vs INKY DMARC Monitoring
Email filtering service protecting against spam, viruses, and phishing.
Key features: 10 listed. See them on the SpamExperts Incoming Email Filtering page.
View SpamExperts Incoming Email FilteringSpamExperts Incoming Email Filtering alternativesMailGuard vs SpamExperts Incoming Email Filtering
Need the answer fast? Best Email Security Solutions for Business picks Proofpoint Core Email Protection, Microsoft Defender for Office 365, Mimecast Advanced Email Security and 4 more.See the shortlist