The closest Mesh 365 alternatives are Fortra Email Security & Anti-Phishing, Bitdefender GravityZone Extended Email Security and Cellopoint Cloud Email Security Solution. Picking a Mesh 365 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.
42 alternativesClosest matches: Fortra Email Security & Anti-Phishing, Bitdefender GravityZone Extended Email Security, Cellopoint Cloud Email Security SolutionPage updated Nov 2026
The product
by Mesh by BitDefender
API-based email security platform for Microsoft 365 environments
Mesh 365 is a commercial Email Security Platforms solution made by Mesh by BitDefender. The closest matches by shared tags and NIST CSF 2.0 coverage are Fortra Email Security & Anti-Phishing, Bitdefender GravityZone Extended Email Security, Cellopoint Cloud Email Security Solution, INKY Behavioral Email Security Platform, and ESET Cloud Office Security. All 42 alternatives on this page are ranked the same way.
These 8 solutions overlap most with Mesh 365. 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
Email security platform protecting against phishing, BEC, and data loss
Cloud-native email security platform with SEG and API-based protection
Cloud-based email security platform protecting against phishing, ransomware, BEC
Behavioral email security platform protecting inbound, outbound, and internal mail
Cloud email security for Microsoft 365 and Google Workspace applications
AI-driven email security platform for Microsoft 365 inbound/outbound threats
MX-based email security platform using AI to block spam, phishing & malware
Email security platform with AI threat detection, BEC protection, and DLP
Email filtering service protecting against spam, viruses, and phishing.
Cloud-based anti-spam and antivirus email filtering with AI threat detection.
Email security platform blocking spam, phishing, malware, and viruses
Email security platform enhanced with multi-tenant mgmt & automation tools
Cloud security platform for M365 covering email, backup, and awareness.
AI-powered email security platform protecting against phishing, BEC, and ATO
Cloud-based email security platform protecting against phishing & ransomware
Email security platform protecting M365 & Google Workspace from threats
Cloud-based email security platform with AI-powered threat detection
Cloud workspace security platform for email, files, and account protection
Enterprise email security platform for cloud and on-premise deployments
Email security platform protecting against phishing, malware, and exploits
Email security platform for Microsoft 365 with AI-based threat detection
AI-powered anti-phishing platform for Microsoft 365 & Google Workspace.
Agentic AI email security platform that investigates emails pre-delivery.
Cloud-based email security service that blocks spam, phishing, malware, and fraud attacks
Email gateway that blocks spam, phishing and malware before inbox delivery, made
Email and collaboration security for Microsoft 365 environments
Email threat protection for Microsoft 365 with advanced detection capabilities
DMARC management platform for email authentication and domain protection
Comprehensive email security & human risk mgmt platform with AI-powered protection
AI-based email security for M365 with phishing, BEC & malware detection.
Cloud-based email filtering blocking phishing, malware, spam & BEC attacks.
DMARC management platform for email auth enforcement across domains.
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 platform with phishing/BEC protection and MDR/XDR integration
Email security platform with inline threat protection and compliant archiving
AI-powered email security platform for threat detection and compliance
AI-powered email and collaboration security platform for threat detection
Email security platform with AI-based threat detection and DLP capabilities
Email security platform protecting against fraud, malware, and spam threats
AI-powered DMARC monitoring and email authentication security platform
AI-powered email security platform detecting threats across email and messaging
Common questions when weighing alternatives to Mesh 365.
The closest matches to Mesh 365 by shared tags and NIST CSF 2.0 coverage are Fortra Email Security & Anti-Phishing, Bitdefender GravityZone Extended Email Security, Cellopoint Cloud Email Security Solution, INKY Behavioral Email Security Platform, and ESET Cloud Office Security. All of them are Email Security Platforms products.
This page shows 42 alternatives to Mesh 365, 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.
Mesh 365 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.
Mesh 365 is a Email Security Platforms product in the Email & Messaging Security category. You can compare it with the 42 other Email Security Platforms products on this page.
View Fortra Email Security & Anti-PhishingFortra Email Security & Anti-Phishing alternativesMesh 365 vs Fortra Email Security & Anti-Phishing
Cloud-native email security platform with SEG and API-based protection
Key features: 10 listed. See them on the Bitdefender GravityZone Extended Email Security page.
Shares 3 capabilities with Mesh 365: Ransomware Prevention, Microsoft 365, Multi Tenancy
View Bitdefender GravityZone Extended Email SecurityBitdefender GravityZone Extended Email Security alternativesMesh 365 vs Bitdefender GravityZone Extended Email Security
Cloud-based email security platform protecting against phishing, ransomware, BEC
Key features: 8 listed. See them on the Cellopoint Cloud Email Security Solution page.
View Cellopoint Cloud Email Security SolutionCellopoint Cloud Email Security Solution alternativesMesh 365 vs Cellopoint Cloud Email Security Solution
Behavioral email security platform protecting inbound, outbound, and internal mail
Key features: 10 listed. See them on the INKY Behavioral Email Security Platform page.
View INKY Behavioral Email Security PlatformINKY Behavioral Email Security Platform alternativesMesh 365 vs INKY Behavioral Email Security Platform
Cloud email security for Microsoft 365 and Google Workspace applications
Key features: 10 listed. See them on the ESET Cloud Office Security page.
View ESET Cloud Office SecurityESET Cloud Office Security alternativesMesh 365 vs ESET Cloud Office Security
AI-driven email security platform for Microsoft 365 inbound/outbound threats
Key features: 10 listed. See them on the KnowBe4 Cloud Email Security page.
View KnowBe4 Cloud Email SecurityKnowBe4 Cloud Email Security alternativesMesh 365 vs KnowBe4 Cloud Email Security
MX-based email security platform using AI to block spam, phishing & malware
Key features: 10 listed. See them on the Cybersentriq MX Email Threat Protection page.
View Cybersentriq MX Email Threat ProtectionCybersentriq MX Email Threat Protection alternativesMesh 365 vs Cybersentriq MX Email Threat Protection
Email security platform with AI threat detection, BEC protection, and DLP
Key features: 10 listed. See them on the ConnectWise Email Security page.
View ConnectWise Email SecurityConnectWise Email Security alternativesMesh 365 vs ConnectWise Email Security
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