Apple iCloud Mail vs CrossBox
Head-to-head usage across the sites we track.
Top sites by authority
Apple iCloud Mail · CrossBox · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
126
0
Open Page Rank 8+
2,135
0
Open Page Rank 7+
9,283
0
Open Page Rank 6+
17,844
0
Open Page Rank 5+
30,151
0
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Apple iCloud Mail · CrossBox · share of sites in each country using one or the other
United States
129,767
3
United Kingdom
50,050
1
Germany
46,068
0
India
42,601
2
Canada
36,709
1
France
29,018
1
Australia
26,471
1
Netherlands
23,412
0
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Apple iCloud Mail | CrossBox |
|---|---|---|
| LCP | 1.7 s | 3.3 s |
| INP | 75 ms | 175 ms |
| CLS | 0 | 0.15 |
| TTFB | 700 ms | 900 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.