Apple iCloud Mail vs Outlook Web App
Head-to-head usage across the sites we track.
Top sites by authority
Apple iCloud Mail · Outlook Web App · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
129
0
Open Page Rank 8+
2,153
13
Open Page Rank 7+
9,391
32
Open Page Rank 6+
18,109
49
Open Page Rank 5+
30,668
67
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 · Outlook Web App · share of sites in each country using one or the other
United States
122,210
2,704
United Kingdom
43,864
1,345
Germany
41,637
1,268
India
39,000
1,547
Canada
33,110
1,153
France
24,224
1,078
Australia
24,281
665
Netherlands
20,791
923
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Apple iCloud Mail | Outlook Web App |
|---|---|---|
| LCP | 1.7 s | 1.7 s |
| INP | 75 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 700 ms | 700 ms |
Median site's p75 values from the Chrome UX Report, Aug 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.