# Mimecast Email Security alternatives: what AI models name instead, October 2026

IT AI Recommendation Index, October 2026 Edition. 156 of the 252 answers in the 1 category where Mimecast Email Security holds a standing named it neither first nor as an alternative; these are the first choices those answers made. Page: https://it-ai-index.com/vendors/mimecast-email-security/alternatives/

## Named instead, most often (every category and segment added)

- Microsoft Defender for Office 365: 26
- Proofpoint Email Protection: 17
- SpamTitan: 12
- Check Point Harmony Email & Collaboration: 10
- Barracuda Email Protection: 7
- IRONSCALES: 7

## Email security

**Small business**: 58 of 84 answers did not name Mimecast Email Security (Mimecast Email Security is #8 of 10 at 4%).

- Microsoft Defender for Office 365: first choice in 11 of those 58
- Check Point Harmony Email & Collaboration: first choice in 7 of those 58
- IRONSCALES: first choice in 7 of those 58
- Proofpoint Email Protection: first choice in 5 of those 58
- SpamTitan: first choice in 4 of those 58
- Barracuda Email Protection: first choice in 3 of those 58
- Google Workspace: first choice in 2 of those 58
- Coro: first choice in 1 of those 58

**Mid-market**: 56 of 84 answers did not name Mimecast Email Security (Mimecast Email Security is #3 of 9 at 10%).

- Microsoft Defender for Office 365: first choice in 9 of those 56
- SpamTitan: first choice in 8 of those 56
- Barracuda Email Protection: first choice in 4 of those 56
- Abnormal AI: first choice in 3 of those 56
- Check Point Harmony Email & Collaboration: first choice in 3 of those 56
- Proofpoint Email Protection: first choice in 2 of those 56
- Sublime Security: first choice in 2 of those 56
- Fortra Agari: first choice in 1 of those 56

**Enterprise**: 42 of 84 answers did not name Mimecast Email Security (Mimecast Email Security is #4 of 8 at 8%).

- Proofpoint Email Protection: first choice in 10 of those 42
- Microsoft Defender for Office 365: first choice in 6 of those 42
- Abnormal AI: first choice in 3 of those 42
- API-Based Integrated Email Cloud Security: first choice in 1 of those 42
- Google Workspace: first choice in 1 of those 42
- Native Microsoft 365: first choice in 1 of those 42

Published under CC BY 4.0. The output is the models' output; nothing here is a recommendation by the index.