Notion Calendar
Proton Mail
| Feature | Notion Calendar | Proton Mail |
|---|---|---|
| Pricing | Free only | Free / from $3.99/mo |
| Free Plan | ✓ Yes | ✓ Yes |
| Rating | 4.4 / 5 | 4.5 / 5 |
| Best For | notion-users, freelancers, knowledge-workers, startup-teams | privacy-conscious-users, journalists, activists, security-professionals |
| Founded | 2021 | 2014 |
| Time Blocking | ✓ | ✗ |
| Availability Sharing | ✓ | ✗ |
| Notion Integration | ✓ | ✗ |
| Multi Calendar | ✓ | ✗ |
| Scheduling Links | ✓ | ✗ |
| Keyboard Shortcuts | ✓ | ✗ |
| Menu Bar Widget | ✓ | ✗ |
| Encryption | ✗ | ✓ |
| Zero Access Architecture | ✗ | ✓ |
| Self Destructing Emails | ✗ | ✓ |
| Custom Domains | ✗ | ✓ |
| Bridge For Desktop | ✗ | ✓ |
| Calendar | ✗ | ✓ |
✓ Notion Calendar Pros
- Beautiful native app with fast performance
- Deep integration with Notion databases and pages
- Availability sharing without back-and-forth emails
- Multi-calendar view across Google and Notion calendars
- Free for all users
✗ Notion Calendar Cons
- Requires Notion account for full functionality
- No Microsoft 365 calendar support yet
- Mobile app less feature-rich than desktop
✓ 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
Notion Calendar is built for notion users and freelancers, with a focus on time-blocking and availability-sharing. Proton Mail targets privacy conscious users and journalists and leads with encryption and zero-access-architecture.
Notion Calendar uses custom enterprise pricing, while Proton Mail starts at $3.99/mo — a tangible advantage for teams with a fixed budget.
Both offer free plans, so you can test each with your real workflow before committing to a subscription.
Feature-wise, Notion Calendar offers broader built-in capabilities (7 features vs 6), while Proton Mail 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.