Microsoft Defender for Office 365 is listed under Email security by Microsoft. The 12 alternatives below are listed in the same category and are compared on starting price, features and reviews from other MSPs.
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Sophos Email Cloud email security for Microsoft 365 and Google Workspace with post-delivery remediation. Microsoft Defender for Office 365 vs Sophos Email
SpamTitan Cloud and on-premises email security blocking phishing and malware, priced per user from $1.26 per month. Microsoft Defender for Office 365 vs SpamTitan
Hornetsecurity 365 Total Protection M365 email security, backup and compliance suite from Hornetsecurity, part of Proofpoint, quote-only. Microsoft Defender for Office 365 vs Hornetsecurity 365 Total Protection
Proofpoint 365 Total Protection Microsoft 365 security and backup suite for small businesses, quoted through MSPs. Microsoft Defender for Office 365 vs Proofpoint 365 Total Protection
TrendAI Email Security Cloud email protection with AI-driven phishing and malware detection, DLP, and Microsoft 365 integration. Microsoft Defender for Office 365 vs TrendAI Email Security
Vade AI email security for Microsoft 365 with bundled contextual security awareness training. Microsoft Defender for Office 365 vs Vade
Mimecast Secure email gateway, continuity, archiving and Engage awareness training, priced only on request. Microsoft Defender for Office 365 vs Mimecast
Barracuda Email Protection Cloud email security, archiving and awareness training bundled into three tiers, priced by quote only. Microsoft Defender for Office 365 vs Barracuda Email Protection
Trustifi Email security with inbound filtering, outbound encryption and DLP, priced per mailbox. Microsoft Defender for Office 365 vs Trustifi
Check Point Email Security API-based email and collaboration security from Avanan, quoted through Check Point partners. Microsoft Defender for Office 365 vs Check Point Email Security
Mailprotector Channel-only email filtering, encryption and archiving for MSPs, priced only on request. Microsoft Defender for Office 365 vs Mailprotector
Cisco Secure Email On-premises, hybrid or cloud email security from Cisco, per-user licensing, quote-only pricing. Microsoft Defender for Office 365 vs Cisco Secure Email| Feature | Microsoft Defender for Office 365 | Sophos Email | SpamTitan | Hornetsecurity 365 Total Protection | Proofpoint 365 Total Protection | TrendAI Email Security | Vade |
|---|---|---|---|---|---|---|---|
| Phishing and malware filtering | yes | yes | yes | yes | yes | yes | yes |
| Spoofing and impersonation protection | yes | yes | yes | yes | yes | yes | yes |
| Email continuity | yes | yes | yes | yes | yes | yes | unknown |
| Archiving | yes | yes | yes | yes | yes | yes | yes |
| Security awareness training bundle | yes | yes | unknown | yes | yes | unknown | yes |
| API-based post-delivery scanning | yes | yes | yes | unknown | yes | yes | yes |
| DMARC monitoring | yes | yes | yes | yes | yes | yes | yes |
| Attachment sandboxing | yes | yes | yes | yes | yes | yes | yes |
| Data loss prevention | yes | yes | yes | yes | yes | yes | yes |
| Email encryption | yes | yes | yes | yes | yes | yes | yes |
| Microsoft 365 integration | yes | yes | yes | yes | yes | yes | yes |
| Self-service quarantine | yes | yes | yes | yes | unknown | yes | unknown |
Sophos Email, which matches 12 of the 12 features Microsoft Defender for Office 365 supports.
