Postbox vs. Proton AG
Side-by-side across both vendors’ full G2 portfolios — reviews, ratings and category coverage aggregated to the company, not a single product.
| Metric | Postbox | Proton AG |
|---|---|---|
| Avg. rating | 3.5 | 4.6 |
| Total reviews | 32 | 820 |
| Review growth (QoQ) | — | -78.3% |
| Products on G2 | 1 | 4 |
| Categories covered | 1 | 15 |
| Best category rank | #28 in Email | #1 in Email Encryption |
| Small Business | 77.4% | 70.0% |
| Mid-Market | 16.1% | 21.8% |
| Enterprise | 6.5% | 8.2% |