# Mimecast alternatives

The highest-scoring alternative to Mimecast in Email Security is **Abnormal Security** (60/100), against Mimecast's 71/100. Ranked on independent signals, not user reviews. No vendor pays for placement.

| # | Alternative | Score | Confidence | Compare |
|--:|---|--:|---|---|
| 1 | [Abnormal Security](https://www.vioscale.ai/software/abnormal-security) | 60 | 12% (low) | [Mimecast vs Abnormal Security](https://www.vioscale.ai/compare/abnormal-security-vs-mimecast) |
| 2 | [Proxmox Mail Gateway](https://www.vioscale.ai/software/proxmox-mail-gateway) | 56 | 18% (low) | [Mimecast vs Proxmox Mail Gateway](https://www.vioscale.ai/compare/mimecast-vs-proxmox-mail-gateway) |
| 3 | [Check Point Harmony Email & Collaboration](https://www.vioscale.ai/software/check-point-harmony-email-collaboration) | 50 | 13% (low) | [Mimecast vs Check Point Harmony Email & Collaboration](https://www.vioscale.ai/compare/check-point-harmony-email-collaboration-vs-mimecast) |
| 4 | [Rspamd](https://www.vioscale.ai/software/rspamd) | 45 | 39% (low) | [Mimecast vs Rspamd](https://www.vioscale.ai/compare/mimecast-vs-rspamd) |
| 5 | [Trend Micro Email Security](https://www.vioscale.ai/software/trend-micro-email-security) | 17 | 3% (low) | [Mimecast vs Trend Micro Email Security](https://www.vioscale.ai/compare/mimecast-vs-trend-micro-email-security) |
| 6 | [Barracuda Email Protection](https://www.vioscale.ai/software/barracuda-email-protection) | 12 | 15% (low) | [Mimecast vs Barracuda Email Protection](https://www.vioscale.ai/compare/barracuda-email-protection-vs-mimecast) |
| 7 | [Proofpoint Email Protection](https://www.vioscale.ai/software/proofpoint-email-protection) | 3 | 15% (low) | [Mimecast vs Proofpoint Email Protection](https://www.vioscale.ai/compare/mimecast-vs-proofpoint-email-protection) |

Mimecast itself ranks #1 of 8 in Email Security.

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*Source: Vioscale (https://www.vioscale.ai/alternatives/mimecast). Generated 2026-09-01T15:02:29.460Z.*