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48 Best Kaseya 365 Advanced Threat Protection Alternatives & Competitors (2026) | CybersecTools

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Kaseya 365 Advanced Threat Protection

Best Kaseya 365 Advanced Threat Protection Alternatives & Competitors in 2026

Top picks: Microsoft Defender for Office 365, Cisco Secure Email Threat Defense, Abnormal AI Security Mailbox — plus 45 more compared.

Email & Messaging Security

Evaluating Kaseya 365 Advanced Threat Protection alternatives comes down to matching Email & Messaging Security capabilities to your environment, integrations, and budget rather than chasing feature parity. The options below are compared on what actually drives a switch: coverage, deployment fit, pricing, and real reviews from security teams. Independent and vendor-neutral: we never sell rankings.

Kaseya 365 Advanced Threat Protection Alternatives and Competitors

Kaseya 365 Advanced Threat Protection is a commercial Email Security Platforms tool developed by Kaseya. Security professionals most commonly compare it with Microsoft Defender for Office 365, Cisco Secure Email Threat Defense, Abnormal AI Security Mailbox, Broadcom Symantec Email Security, and Darktrace Email Security. All 48 alternatives are matched by shared capabilities, tags, and NIST CSF 2.0 coverage.

Data verified Jul 2026

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Top Kaseya 365 Advanced Threat Protection Alternatives and Competitors at a Glance

A closer look at the 8 most relevant alternatives and competitors to Kaseya 365 Advanced Threat Protection, including their key features and shared capabilities.

Microsoft Defender for Office 365

Commercial

Email Security Platforms

Email and collaboration security for Microsoft 365 environments

Key features: AI-powered sentiment analysis for email filtering, Inline protection against malicious links and attachments in Outlook and Teams, Real-time detonation of attachments and links, Automated BEC attack disruption with user disabling and device isolation, Post-delivery removal of malicious emails

View Microsoft Defender for Office 365|Microsoft Defender for Office 365 alternatives|Compare Microsoft Defender for Office 365

Cisco Secure Email Threat Defense

Commercial

Email Security Platforms

Email threat protection for Microsoft 365 with advanced detection capabilities

Key features: Advanced threat detection for known, emerging, and targeted threats, Malicious technique identification with business risk context, Real-time threat search and remediation, Searchable threat telemetry and categorization, Vulnerability assessment by organizational unit

View Cisco Secure Email Threat Defense|Cisco Secure Email Threat Defense alternatives|Compare Cisco Secure Email Threat Defense

Abnormal AI Security Mailbox

Commercial

Email Security Platforms

AI-powered email security operations platform for automated threat triage

Key features: 24/7 AI-powered autonomous triage of user-reported emails, Automated classification of emails as malicious, spam, safe, or phishing simulation, AI-assisted investigation with identification of similar messages across mailboxes, Campaign remediation with bulk removal of unreported malicious emails, Conversational AI assistant providing automated responses to employees

View Abnormal AI Security Mailbox|Abnormal AI Security Mailbox alternatives|Compare Abnormal AI Security Mailbox

Broadcom Symantec Email Security

Commercial

Email Security Platforms

Enterprise email security platform for cloud and on-premise deployments

Key features: Multilayered defense against ransomware, spear phishing, and BEC attacks, Cloud-based and on-premises deployment options, Cloud-based sandboxing for advanced threat detection, Click-time URL protection, Office 365 clawback and remediation

View Broadcom Symantec Email Security|Broadcom Symantec Email Security alternatives|Compare Broadcom Symantec Email Security

Darktrace Email Security

Commercial

Email Security Platforms

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

Key features: Self-Learning AI behavioral threat detection, Inbound and outbound email protection, Lateral mail monitoring for insider threats, Account takeover detection, Microsoft Teams security monitoring

View Darktrace Email Security|Darktrace Email Security alternatives|Compare Darktrace Email Security

IRONSCALES Adaptive AI Email Security

Commercial

Email Security Platforms

AI-powered email security platform with behavioral detection and automation

Key features: Behavioral baseline and social graph construction for users, Real-time email analysis using behavioral and semantic models, Sender Relationship Analysis detection model, Entity and Keyword Reputation analysis, Computer Vision-based threat detection

View IRONSCALES Adaptive AI Email Security|IRONSCALES Adaptive AI Email Security alternatives|Compare IRONSCALES Adaptive AI Email Security

Commercial

Email Security Platforms

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

Key features: AI-powered email threat detection and protection, Risk monitoring to identify exploitable systems and users, Endpoint, network, and cloud threat detection and automated response, Browser extension for real-time web protection, Security awareness training and phishing simulation

View Upfort|Upfort alternatives|Compare Upfort

AI-Powered Email Security & DMARC Protection

Commercial

Email Security Platforms

AI-powered DMARC monitoring and email authentication security platform

Key features: Real-time DMARC policy monitoring with detailed re, AI-powered anomaly detection using machine learnin, AI-based monitoring and alerting system that learn, Comprehensive TLS reporting with encryption analys, IP reputation monitoring and management with detai

View AI-Powered Email Security & DMARC Protection|AI-Powered Email Security & DMARC Protection alternatives|Compare AI-Powered Email Security & DMARC Protection

All 48 Alternatives & Competitors to Kaseya 365 Advanced Threat Protection

Compare

Microsoft Defender for Office 365

Email and collaboration security for Microsoft 365 environments

Email Security Platforms

Compare

Cisco Secure Email Threat Defense

Email threat protection for Microsoft 365 with advanced detection capabilities

Email Security Platforms

Compare

Abnormal AI Security Mailbox

AI-powered email security operations platform for automated threat triage

Email Security Platforms

Compare

Broadcom Symantec Email Security

Enterprise email security platform for cloud and on-premise deployments

Email Security Platforms

Compare

Darktrace Email Security

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

Email Security Platforms

Compare

IRONSCALES Adaptive AI Email Security

AI-powered email security platform with behavioral detection and automation

Email Security Platforms

Compare

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

Email Security Platforms

Compare

AI-Powered Email Security & DMARC Protection

AI-powered DMARC monitoring and email authentication security platform

Email Security Platforms

Compare

DMARC monitoring platform protecting domains from spoofing and BEC attacks.

Email Security Platforms

Compare

Fortinet FortiMail Email Security

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

Email Security Platforms

Compare

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.

Email Security Platforms

Compare

Cellopoint Cloud Email Security Solution

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

Email Security Platforms

Compare

INKY Behavioral Email Security Platform

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

Email Security Platforms

Compare

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

Email Security Platforms

Compare

SorbSecurity Cloud Email Security

Cloud-based email security platform protecting against phishing & ransomware

Email Security Platforms

Compare

Mimecast Advanced Email Security

Email security platform protecting M365 & Google Workspace from threats

Email Security Platforms

Compare

GreatHorn Email Security

Cloud-native email security platform for phishing detection and response

Email Security Platforms

Compare

Trustifi AI Powered Email Security

AI-powered email security platform for threat detection and compliance

Email Security Platforms

Compare

MX Layer Email Security

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

Email Security Platforms

Compare

xorlab Email Security

AI-driven email security platform for detecting advanced email threats

Email Security Platforms

Compare

Trend Micro Trend Vision One™

AI-powered email and collaboration security platform for threat detection

Email Security Platforms

Compare

LevelBlue Email Security

Managed email security service protecting against email-based threats

Email Security Platforms

Compare

Proofpoint Threat Protection

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

Email Security Platforms

Compare

AnubisNetworks Email Security

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

Email Security Platforms

Compare

Abnormal Inbound Email Security

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

Email Security Platforms

Compare

ESET Cloud Office Security

Cloud email security for Microsoft 365 and Google Workspace applications

Email Security Platforms

Compare

Material Security Email Security

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

Email Security Platforms

Compare

Bitdefender GravityZone Extended Email Security

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

Email Security Platforms

Compare

Comodo Secure Email Gateway

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

Email Security Platforms

Compare

OPSWAT MetaDefender Email Security

Email security platform protecting against phishing, malware, and exploits

Email Security Platforms

Compare

VIPRE Integrated Email Security (IES)

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

Email Security Platforms

Compare

Egress Intelligent Email Security

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

Email Security Platforms

Compare

Trustifi Inbound Shield

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

Email Security Platforms

Compare

API-based email security platform for Microsoft 365 environments

Email Security Platforms

Compare

Sublime Email Security

AI-powered email security platform with agentic automation and detection

Email Security Platforms

Compare

KnowBe4 Cloud Email Security

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

Email Security Platforms

Compare

Cybersentriq MX Email Threat Protection

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

Email Security Platforms

Compare

ThreatDown Email Security

AI-powered email security platform for phishing and BEC protection

Email Security Platforms

Compare

ConnectWise Email Security

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

Email Security Platforms

Compare

Hoplite Artemis Web and Mail

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

Email Security Platforms

Compare

SpamExperts Email Security

Email security platform filtering spam, phishing, and malware threats

Email Security Platforms

Compare

SpamExperts Incoming Email Filtering

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

Email Security Platforms

Compare

Group-IB Business Email Protection

Email security platform protecting against phishing, malware, and BEC attacks

Email Security Platforms

Compare

AegisAI Agentic Email Security

AI-powered email security platform that detects phishing, BEC, and malware

Email Security Platforms

Compare

Strongest Layer

AI-native email security platform detecting phishing and BEC attacks

Email Security Platforms

Compare

GLIMPS Email Security for M365

AI-based email security for M365 with phishing, BEC & malware detection.

Email Security Platforms

Compare

ID Agent Graphus

AI-powered anti-phishing platform for Microsoft 365 & Google Workspace.

Email Security Platforms

Compare

Infonaligy Proofpoint Email Security

Managed Proofpoint email security service for phishing & BEC protection.

Email Security Platforms

Also compare alternatives to:

Microsoft Defender for Office 365 alternatives Cisco Secure Email Threat Defense alternatives Abnormal AI Security Mailbox alternatives Broadcom Symantec Email Security alternatives Darktrace Email Security alternatives IRONSCALES Adaptive AI Email Security alternatives Upfort alternatives AI-Powered Email Security & DMARC Protection alternatives PowerDMARC alternatives Fortinet FortiMail Email Security alternatives Cloudflare Cloud Email Security alternatives Cellopoint Cloud Email Security Solution alternatives

Compare Kaseya 365 Advanced Threat Protection with:

Kaseya 365 Advanced Threat Protection vs Microsoft Defender for Office 365 Kaseya 365 Advanced Threat Protection vs Cisco Secure Email Threat Defense Kaseya 365 Advanced Threat Protection vs Abnormal AI Security Mailbox Kaseya 365 Advanced Threat Protection vs Broadcom Symantec Email Security Kaseya 365 Advanced Threat Protection vs Darktrace Email Security Kaseya 365 Advanced Threat Protection vs IRONSCALES Adaptive AI Email Security Kaseya 365 Advanced Threat Protection vs Upfort Kaseya 365 Advanced Threat Protection vs AI-Powered Email Security & DMARC Protection

Kaseya 365 Advanced Threat Protection Alternatives FAQ

Common questions security professionals ask when evaluating alternatives and competitors to Kaseya 365 Advanced Threat Protection.

What are the best alternatives to Kaseya 365 Advanced Threat Protection?

The most popular alternatives to Kaseya 365 Advanced Threat Protection include Microsoft Defender for Office 365, Cisco Secure Email Threat Defense, Abnormal AI Security Mailbox, Broadcom Symantec Email Security, and Darktrace Email Security. These Email Security Platforms tools offer similar capabilities and are frequently compared by security professionals evaluating their options.

How many alternatives to Kaseya 365 Advanced Threat Protection are available?

There are 48 alternatives to Kaseya 365 Advanced Threat Protection listed on CybersecTools, all within the Email Security Platforms category. Each alternative is matched based on shared capabilities, tags, and NIST CSF coverage areas.

Is Kaseya 365 Advanced Threat Protection free or commercial?

Kaseya 365 Advanced Threat Protection is a commercial Email Security Platforms tool. It requires a paid license or subscription. Both free and commercial alternatives are available for comparison.

What type of tool is Kaseya 365 Advanced Threat Protection?

Kaseya 365 Advanced Threat Protection is a Email Security Platforms tool within the broader Email & Messaging Security category. It is used by security professionals for email security platforms capabilities and can be compared against 48 similar tools.

Have more questions? Browse our categories or search for specific tools.

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