Aster Mail vs Proton
Both are Communication tools. Below, the differences that matter: verified pricing, editorial scores and who each one is really for.
Aster Mail: Encrypted email with free plan and paid plans from $2.99/mo. Learn how Aster Mail protects your inbox. Pricing: from $2.99/mo. (data verified August 2026)
Proton: Proton offers end-to-end encrypted email, calendar, VPN, and storage with a free tier and paid plans from $3.99/mo. Pricing: Free · from $3.99/mo for Mail Plus · from $9.99/mo for Proton Unlimited. (data verified June 2026)
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At a glance
 Aster Mail |
 Proton ◆ | |
|---|---|---|
| Rating | — | — |
| Pricing | from $2.99/mo | Free · from $3.99/mo for Mail Plus · from $9.99/mo for Proton Unlimited |
| Pricing model | — | Freemium |
| Category | Communication | |
| Visit website → | Visit website → | |
Editorial scorecard
Editorial score from our review methodology — not user ratings.
| Ease of use | 8.0 | 7.5 |
| Features depth | 8.5 | 8.5 |
| Value for money | 9.0 | 8.0 |
| Support quality | 7.0 | 6.5 |
| Integrations | 6.5 | 5.5 |
| Scalability | 6.0 | 7.0 |
| Documentation | 7.5 | 7.5 |
| Onboarding speed | 8.5 | 8.0 |
| Overall | 7.6 | 7.3 |
Frequently asked questions
What is Aster Mail?
Encrypted email with free plan and paid plans from $2.99/mo. Learn how Aster Mail protects your inbox.
What is Proton?
Proton offers end-to-end encrypted email, calendar, VPN, and storage with a free tier and paid plans from $3.99/mo.
How much do Aster Mail and Proton cost?
Aster Mail: from $2.99/mo. Proton: Free · from $3.99/mo for Mail Plus · from $9.99/mo for Proton Unlimited.
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