Mimecast Advanced Email Security Alternatives (2026)
- Starting price
- Custom quote
- Free trial
- 30 days
- Deployment
- Cloud
- Best for
- Mid-market to enterprise teams wanting email security bundled with archiving + continuity
Our verdict
The top alternatives to Mimecast Advanced Email Security are IRONSCALES, Proofpoint Email Protection, Check Point Harmony Email (Avanan). IRONSCALES is the closest like-for-like option (4.7/5 (~45 G2 reviews), from $3.11/mailbox/mo). People typically switch from Mimecast Advanced Email Security over pricing model, complexity, or a missing capability — the table compares each alternative on exactly those axes.
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IRONSCALES
★ Editor's ChoiceBest for MSPs and mid-market teams wanting human + AI phishing defense with public self-serve pricing.
- API-based deployment (no MX change)
- Human + AI crowdsourced detection
- Automated phishing remediation
Free trial Free version - 2
Proofpoint Email Protection
Best for Regulated enterprises wanting the most mature secure email gateway with deep threat intelligence.
- Secure email gateway (MX-routed)
- NexusAI threat detection
- TAP attachment + URL sandboxing
Free trial Free version - 3
Check Point Harmony Email (Avanan)
Best for Microsoft 365 / Google Workspace shops wanting API-based protection with no MX change.
- Inline API deployment (no MX change)
- Post-delivery + internal email scanning
- Anti-phishing + malware + BEC
Free trial Free version -
Best for Enterprises prioritizing best-in-class behavioral AI detection of BEC and account takeover.
- API-based behavioral AI
- No-tuning anomaly detection
- BEC + impersonation protection
Free trial Free version - 5
Barracuda Email Protection
Best for SMBs and MSPs wanting broad, no-drama email protection plus backup from one familiar vendor.
- Gateway + API-based protection
- Impersonation + phishing protection
- Automated incident response
Free trial Free version
More alternatives detail
Teams usually move off Mimecast Advanced Email Security for one of three reasons: pricing model, complexity, or a missing capability. The closest like-for-like options on the data we track are IRONSCALES, Proofpoint Email Protection, Check Point Harmony Email (Avanan).
- IRONSCALES — MSPs and mid-market teams wanting human + AI phishing defense with public self-serve pricing; from $3.11/mailbox/mo (4.7/5 (~45 G2 reviews)). Compare directly: Mimecast Advanced Email Security vs IRONSCALES.
- Proofpoint Email Protection — Regulated enterprises wanting the most mature secure email gateway with deep threat intelligence; from Custom quote (4.6/5 (~548 G2 reviews)). Compare directly: Mimecast Advanced Email Security vs Proofpoint Email Protection.
- Check Point Harmony Email (Avanan) — Microsoft 365 / Google Workspace shops wanting API-based protection with no MX change; from Custom quote (4.6/5 (~511 G2 reviews)). Compare directly: Mimecast Advanced Email Security vs Check Point Harmony Email (Avanan).
- Abnormal AI — Enterprises prioritizing best-in-class behavioral AI detection of BEC and account takeover; from Custom quote (4.8/5 (~65 G2 reviews)). Compare directly: Mimecast Advanced Email Security vs Abnormal AI.
- Barracuda Email Protection — SMBs and MSPs wanting broad, no-drama email protection plus backup from one familiar vendor; from $5/user/mo (4.4/5 (~220 G2 reviews)). Compare directly: Mimecast Advanced Email Security vs Barracuda Email Protection.
Frequently asked questions
- What is the best alternative to Mimecast Advanced Email Security?
- IRONSCALES is the top-rated alternative in our data-weighted ranking (from $3.11/mailbox/mo).
- Why do people switch from Mimecast Advanced Email Security?
- Usually pricing model, complexity, or a missing capability. The table compares each alternative on exactly those axes.