June
Proton Mail
| Feature | June | Proton Mail |
|---|---|---|
| Pricing | Free / from $149/mo | Free / from $3.99/mo |
| Free Plan | ✓ Yes | ✓ Yes |
| Rating | 4.4 / 5 | 4.5 / 5 |
| Best For | b2b-saas, product-managers, growth-teams, startup-founders | privacy-conscious-users, journalists, activists, security-professionals |
| Founded | 2021 | 2014 |
| Auto Reports | ✓ | ✗ |
| Activation Tracking | ✓ | ✗ |
| Retention Analysis | ✓ | ✗ |
| Feature Adoption | ✓ | ✗ |
| Company Profiles | ✓ | ✗ |
| Slack Alerts | ✓ | ✗ |
| Encryption | ✗ | ✓ |
| Zero Access Architecture | ✗ | ✓ |
| Self Destructing Emails | ✗ | ✓ |
| Custom Domains | ✗ | ✓ |
| Bridge For Desktop | ✗ | ✓ |
| Calendar | ✗ | ✓ |
✓ June Pros
- Auto-generated reports
- Built for B2B SaaS
- Company-level analytics
- Segment integration
✗ June Cons
- B2B SaaS focused only
- Expensive for early-stage
- Limited custom dashboards
✓ 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
June is built for b2b saas and product managers, with a focus on auto-reports and activation-tracking. Proton Mail targets privacy conscious users and journalists and leads with encryption and zero-access-architecture.
On pricing, Proton Mail is the clear winner for budget-conscious users — starting at $3.99/mo compared to $149/mo for June. That $145.01/mo difference adds up quickly for growing teams.
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.