Best SilverSky Email Protection Services Alternatives & Competitors in 2026

SpamTitan Gateway

Email security gateway appliance for spam/malware filtering and mail flow control.

Mesh Gateway

Email security gateway protecting against phishing, BEC, and email-borne threats

MDaemon Security Gateway for Email

Email security gateway for protecting email infrastructure from threats

Resec

Gateway security solution using CDR to prevent file-based threats

Microsoft Defender for Office 365

Email and collaboration security for Microsoft 365 environments

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.

Hornetsecurity 365 Total Protection

Comprehensive M365 security suite with email protection, backup, and compliance

Sophos Email

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

odix FileWallTM for Microsoft 365

File-based threat protection for Microsoft 365 using CDR technology

SorbSecurity Cloud Email Security

Cloud-based email security platform protecting against phishing & ransomware

Zivver Secure Business Email

All-in-one email security platform for threat protection and compliance

Trustifi AI Powered Email Security

AI-powered email security platform for threat detection and compliance

MDaemon Technologies SecurityGateway

Email security gateway protecting against spam, phishing, viruses & data leaks

MX Layer Email Security

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

Trend Micro Trend Vision One™

AI-powered email and collaboration security platform for threat detection

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

ESET Cloud Office Security

Cloud email security for Microsoft 365 and Google Workspace applications

TitanHQ SpamTitan

Email security platform blocking spam, phishing, malware, and viruses

Bitdefender GravityZone Extended Email Security

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

Broadcom Symantec Email Security

Enterprise email security platform for cloud and on-premise deployments

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

TitanHQ Cybersecurity Bundles

Bundled cybersecurity solutions for MSPs and end users with email protection

MX Layer Outbound Email Filtering

Outbound email filtering platform for spam prevention and IP reputation mgmt

VIPRE Integrated Email Security (IES)

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

Mimecast Collaboration Threat Protection

Secures Microsoft Teams, SharePoint & OneDrive from malware and phishing

Mesh 365

API-based email security platform for Microsoft 365 environments

Cybersentriq MX Email Threat Protection

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

ConnectWise Email Security

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

Sasa Software GateScanner

File-based threat protection using CDR across email, file transfer, and media

Vircom Email Security

Email security platform enhanced with multi-tenant mgmt & automation tools

OpenText Email Security

Comprehensive email security platform protecting inbound/outbound communications

SmarterTools SmarterMail

Email server with antispam, antivirus, and security features for Linux/Windows

Nexor Sentinel

High assurance email guard for NATO with EAL4+ certification and DLP

Blaze Networks Blaze Screen

Managed email filtering service with threat detection and spam prevention

Cyber Cops Email Security

Cloud-based email security service protecting against phishing, malware & BEC

ATG Managed Email Security

Managed cloud email security service with anti-spam, anti-phishing, and DLP.

Clearnetwork ContentCatcher

Cloud-based email security platform with DLP, encryption, and archiving.

Cybonet Mail Secure

Email security gateway with anti-spam, AV, sandboxing, and DLP.

GLIMPS Email Security for M365

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

Halon

Composable email infrastructure platform with threat detection and AI ops.

Infonaligy Proofpoint Email Security

Managed Proofpoint email security service for phishing & BEC protection.

Infortech Secure Managed Business Email

Managed business email service on MailEnable with security & no per-mailbox fees.

SourcetekIT Email Security Service

Managed email security service for Office 365 using Cisco's platform.

SpamTitan

Cloud-based anti-spam and antivirus email filtering with AI threat detection.

SpamTitan for Office 365

Email security layer for M365 with anti-phishing, sandboxing, and DLP.

Upfort

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