Proton
SentinelOne
| Feature | Proton | SentinelOne |
|---|---|---|
| Pricing | Free / from $3.99/mo | Contact sales |
| Free Plan | ✓ Yes | ✗ No |
| Rating | 4.5 / 5 | 4.5 / 5 |
| Best For | privacy-advocates, journalists, activists, security-conscious-users | enterprise, security-operations, cloud-companies, regulated-industries |
| Founded | 2014 | 2013 |
| Encrypted Email | ✓ | ✗ |
| Vpn | ✓ | ✗ |
| Cloud Storage | ✓ | ✗ |
| Calendar | ✓ | ✗ |
| Password Manager | ✓ | ✗ |
| Aliases | ✓ | ✗ |
| Self Destructing Messages | ✓ | ✗ |
| Edr | ✗ | ✓ |
| Xdr | ✗ | ✓ |
| Ai Threat Detection | ✗ | ✓ |
| Automated Response | ✗ | ✓ |
| Cloud Security | ✗ | ✓ |
| Identity Security | ✗ | ✓ |
✓ Proton Pros
- End-to-end encryption for all services
- Swiss-based with strong privacy laws
- Open-source and independently audited
- Comprehensive privacy suite (mail, VPN, drive, calendar)
- Free tier available for all services
✗ Proton Cons
- Free storage is limited (1GB for mail)
- Less feature-rich than mainstream alternatives
- Search functionality limited due to encryption
✓ SentinelOne Pros
- Autonomous response
- AI-powered
- Low false positives
- Cloud workload protection
✗ SentinelOne Cons
- Expensive
- Complex deployment
- Resource intensive
The Verdict
Proton is built for privacy advocates and journalists, with a focus on encrypted-email and vpn. SentinelOne targets enterprise and security operations and leads with edr and xdr.
SentinelOne uses custom enterprise pricing, while Proton starts at $3.99/mo — a tangible advantage for teams with a fixed budget.
Proton has a free plan, which gives it a meaningful edge for individuals and small teams exploring their options. SentinelOne requires a paid subscription from day one.
Feature-wise, Proton offers broader built-in capabilities (7 features vs 6), while SentinelOne takes a more focused approach — which can mean a simpler, faster onboarding experience.
This is a genuinely close comparison. If you can, sign up for both free trials (where available) and run a one-week test with your actual team tasks before deciding.