Best Email Security Software · 2026
Check Point Harmony Email (Avanan) vs 
Mimecast Advanced Email Security Check Point Harmony Email (Avanan) vs Mimecast Advanced Email Security: on our data-weighted scoring, Check Point Harmony Email (Avanan) edges ahead (8.1 vs 7.9/10). Check Point Harmony Email (Avanan) starts at Custom quote and is best for microsoft 365 / google workspace shops wanting api-based protection with no mx change; Mimecast Advanced Email Security starts at Custom quote and is best for mid-market to enterprise teams wanting email security bundled with archiving + continuity. Choose Check Point Harmony Email (Avanan) for the stronger overall track record; consider Mimecast Advanced Email Security if its pricing model or fit matches your environment better. Side-by-side table below.
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Six criteria, each scored 0–10 on the same scale from real review data, public pricing and feature coverage. See our methodology →
| Criterion | Check Point Harmony Email (Avanan) | Mimecast Advanced Email Security |
|---|---|---|
| Editorial | 8.1 | 7.9 |
| User reviews | 9.2 | 8.8 |
| Adoption | 7.2 | 6.5 |
| Affordability | 5.0 | 5.0 |
| Feature breadth | 6.0 | 6.0 |
| Ease of trial | 6.0 | 6.0 |
| Check Point Harmony Email (Avanan) | Mimecast Advanced Email Security | |
|---|---|---|
| Starting price | Custom quote | Custom quote |
| Pricing model | quote | quote |
| Free trial / tier | 14 days | 30 days |
| Best for | Microsoft 365 / Google Workspace shops wanting API-based protection with no MX change | Mid-market to enterprise teams wanting email security bundled with archiving + continuity |
| Deployment | Cloud | Cloud |
| G2 rating | 4.6/5 (511) | 4.4/5 (297) |
| Capterra rating | 4.8/5 (51) | — |
| Our score | 8.1 | 7.9 |
You need microsoft 365 / google workspace shops wanting api-based protection with no mx change.
You need mid-market to enterprise teams wanting email security bundled with archiving + continuity.
Check Point Harmony Email (Avanan) bills on a quote model from Custom quote (14 days trial), while Mimecast Advanced Email Security uses a quote model from Custom quote (30 days trial). Because the models differ, the cheaper option flips depending on your fleet size — model both at your seat/endpoint count.
Check Point Harmony Email (Avanan) ships 6 headline capabilities (Inline API deployment (no MX change), Post-delivery + internal email scanning, Anti-phishing + malware + BEC, Account takeover detection) and deploys Cloud. Mimecast Advanced Email Security ships 6 (Secure email gateway, CyberGraph AI threat intel, Built-in email archiving (10+ yr), Mailbox continuity), deploying Cloud.
Check Point Harmony Email (Avanan) holds 4.6/5 (~511 G2 reviews); Mimecast Advanced Email Security holds 4.4/5 (~297 G2 reviews). On our data-weighted score, Check Point Harmony Email (Avanan) edges ahead (8.1 vs 7.9/10). Pick Mimecast Advanced Email Security instead when mid-market to enterprise teams wanting email security bundled with archiving + continuity. See Check Point Harmony Email (Avanan) alternatives or Mimecast Advanced Email Security alternatives.