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
8
Open Page Rank 8+
0
52
Open Page Rank 7+
0
214
Open Page Rank 6+
0
445
Open Page Rank 5+
0
777
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
5,929
United Kingdom
1
2,191
India
1
2,032
Germany
0
1,966
France
0
1,962
Canada
1
1,813
Netherlands
0
1,488
Spain
0
1,398
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | CrossBox | Proton Mail |
|---|---|---|
| LCP | 3.8 s | 1.7 s |
| INP | 175 ms | 75 ms |
| CLS | 0.25 | 0 |
| TTFB | 700 ms | 700 ms |
Median site's p75 values from the Chrome UX Report, Sep 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.