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.
Affiliate disclosure: Some links may be affiliate or partner links. If you sign up through one, we may earn a commission at no extra cost to you. This never changes our scores or rankings. Learn more.
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.
