Best Sendmarc Breach Detection Alternatives & Competitors in 2026

Sendmarc Lookalike Domain Defense

Monitors and detects lookalike domains used for brand impersonation attacks.

MailChannels Outbound Filtering

Cloud SMTP relay for hosting providers to filter outbound spam & protect IP reputation.

Upfort

Unified AI-powered cybersecurity & cyber insurance platform for SMBs.

Suped

Email deliverability platform that provides DMARC monitoring

AI-Powered Email Security & DMARC Protection

AI-powered DMARC monitoring and email authentication security platform

Cisco Secure Email Threat Defense

Email threat protection for Microsoft 365 with advanced detection capabilities

PowerDMARC

DMARC monitoring platform protecting domains from spoofing and BEC attacks.

Microsoft Defender for Office 365

Email and collaboration security for Microsoft 365 environments

Fortinet FortiMail Email Security

AI-powered email security platform protecting against phishing, BEC, and ATO

Cloudflare Cloud Email Security

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.

Cellopoint Cloud Email Security Solution

Cloud-based email security platform protecting against phishing, ransomware, BEC

INKY Behavioral Email Security Platform

Behavioral email security platform protecting inbound, outbound, and internal mail

Sophos Email

Email security platform with phishing/BEC protection and MDR/XDR integration

TrustLayer Mail

Email security platform with inline threat protection and compliant archiving

SorbSecurity Cloud Email Security

Cloud-based email security platform protecting against phishing & ransomware

Mimecast Advanced Email Security

Email security platform protecting M365 & Google Workspace from threats

GreatHorn Email Security

Cloud-native email security platform for phishing detection and response

Trustifi AI Powered Email Security

AI-powered email security platform for threat detection and compliance

MX Layer Email Security

Cloud-based email security platform with AI-powered threat detection

xorlab Email Security

AI-driven email security platform for detecting advanced email threats

Trend Micro Trend Vision One™

AI-powered email and collaboration security platform for threat detection

LevelBlue Email Security

Managed email security service protecting against email-based threats

Proofpoint Threat Protection

Email security platform with AI-based threat detection and DLP capabilities

AnubisNetworks Email Security

Email security platform protecting against fraud, malware, and spam threats

Abnormal Inbound Email Security

AI-powered email security platform detecting advanced threats via behavioral analysis

Abnormal AI Security Mailbox

AI-powered email security operations platform for automated threat triage

ESET Cloud Office Security

Cloud email security for Microsoft 365 and Google Workspace applications

Material Security Email Security

Cloud workspace security platform for email, files, and account protection

Bitdefender GravityZone Extended Email Security

Cloud-native email security platform with SEG and API-based protection

Comodo Secure Email Gateway

Cloud-based email gateway with spam filtering, anti-phishing, and containment

Broadcom Symantec Email Security

Enterprise email security platform for cloud and on-premise deployments

Darktrace Email Security

AI-powered email security platform detecting threats across email and messaging

OPSWAT MetaDefender Email Security

Email security platform protecting against phishing, malware, and exploits

Fortra Email Security & Anti-Phishing

Email security platform protecting against phishing, BEC, and data loss

VIPRE Integrated Email Security (IES)

Email security platform for Microsoft 365 with AI-based threat detection

Egress Intelligent Email Security

Cloud email security platform for inbound/outbound threat detection & DLP

Trustifi Inbound Shield

AI-powered inbound email security platform for phishing & malware detection

Mesh 365

API-based email security platform for Microsoft 365 environments

Sublime Email Security

AI-powered email security platform with agentic automation and detection

KnowBe4 Cloud Email Security

AI-driven email security platform for Microsoft 365 inbound/outbound threats

Cybersentriq MX Email Threat Protection

MX-based email security platform using AI to block spam, phishing & malware

ThreatDown Email Security

AI-powered email security platform for phishing and BEC protection

ConnectWise Email Security

Email security platform with AI threat detection, BEC protection, and DLP

Hoplite Artemis Web and Mail

Email and web threat detection platform with AI-based behavioral analysis

IRONSCALES Adaptive AI Email Security

AI-powered email security platform with behavioral detection and automation

Kaseya 365 Advanced Threat Protection

ATP solution for SaaS & email with AI-driven detection & auto-response

SpamExperts Email Security

Email security platform filtering spam, phishing, and malware threats

SpamExperts Incoming Email Filtering

Email filtering service protecting against spam, viruses, and phishing.