Keeper Security
Proton Mail
| Feature | Keeper Security | Proton Mail |
|---|---|---|
| Pricing | Free / from $2.92/mo | Free / from $3.99/mo |
| Free Plan | ✓ Yes | ✓ Yes |
| Rating | 4.5 / 5 | 4.5 / 5 |
| Best For | businesses, it-teams, families, security-conscious-users | privacy-conscious-users, journalists, activists, security-professionals |
| Founded | 2009 | 2014 |
| Password Vault | ✓ | ✗ |
| Dark Web Monitoring | ✓ | ✗ |
| Secure Sharing | ✓ | ✗ |
| Mfa | ✓ | ✗ |
| Secrets Management | ✓ | ✗ |
| Compliance Reporting | ✓ | ✗ |
| Encryption | ✗ | ✓ |
| Zero Access Architecture | ✗ | ✓ |
| Self Destructing Emails | ✗ | ✓ |
| Custom Domains | ✗ | ✓ |
| Bridge For Desktop | ✗ | ✓ |
| Calendar | ✗ | ✓ |
✓ Keeper Security Pros
- Zero-knowledge architecture
- Excellent business features
- BreachWatch dark web monitoring
- Good compliance tools
✗ Keeper Security Cons
- Limited free plan
- Add-ons increase cost
- Interface could be more intuitive
✓ Proton Mail Pros
- End-to-end encryption
- No ads
- Swiss privacy laws
- Open source
✗ Proton Mail Cons
- Limited free storage
- Fewer integrations
- Search limited to metadata
The Verdict
Keeper Security is built for businesses and it teams, with a focus on password-vault and dark-web-monitoring. Proton Mail targets privacy conscious users and journalists and leads with encryption and zero-access-architecture.
Pricing is close: Keeper Security starts at $2.92/mo versus $3.99/mo for Proton Mail — not a deciding factor on its own.
Both offer free plans, so you can test each with your real workflow before committing to a subscription.
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.