CrossBox vs Proton Mail
Head-to-head usage across the sites we track.
Top sites by authority
CrossBox · Proton Mail · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
0
7
Open Page Rank 8+
0
47
Open Page Rank 7+
0
198
Open Page Rank 6+
0
418
Open Page Rank 5+
0
737
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
CrossBox · Proton Mail · share of sites in each country using one or the other
United States
3
6,185
United Kingdom
1
2,300
France
1
2,126
India
2
2,067
Germany
0
2,033
Canada
1
1,910
Netherlands
0
1,566
Spain
0
1,381
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | CrossBox | Proton Mail |
|---|---|---|
| LCP | 3.3 s | 1.7 s |
| INP | 175 ms | 75 ms |
| CLS | 0.15 | 0 |
| TTFB | 900 ms | 700 ms |
Median site's p75 values from the Chrome UX Report, Jun 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.