Proton Pricing
Starting price
$0/month
Pricing model
Paid
Free tier
Yes
Free trial
Yes
Plans
| Plan | Price | Billing | Notes |
|---|---|---|---|
| Free | — | month | 1 GB storage; 1 user; 1 encrypted email address |
| Mail Plus | $0 | month | 15 GB storage; 1 user; 10 encrypted email addresses |
| Unlimited | $0 | month | 500 GB storage; 1 user; 15 encrypted email addresses |
Figures are the vendor's published prices. Unknown values show as “—”. Price-history tracking is not yet available for this tool. Price verified 2026-09-29. Last updated 2026-10-07.
True cost
True cost calculator
| Plan | Listed | Seat basis | Monthly · 5 seats | Annual · 5 seats |
|---|---|---|---|---|
| Mail Plus | $0/month | flat | $0 | $0 |
| Unlimited | $0/month | flat | $0 | $0 |
Estimate from published prices. Per-seat plans scale with seats; flat plans don't; plans with included seats charge the base until you exceed them, then add the per-seat overage where published. Monthly/annual come from each plan's billing period. Taxes and add-ons excluded.
Proton's starting price ($0) is 100% below the Email & Messaging Marketing average of $91.