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Technologies · September 2026

Which Webmail is readiest for AI agents?

4 measured, averaging 23.5% against 21.0% for the web overall. Systems that allow users to send and receive emails through a browser

Every one of them, best first

How to read these figures

The colour says what a bar IS, not how it scores: the accent is the one this page is about, grey is everything it is compared with, and the hollow bar is the web overall — the ruler, not a rival. Whether a figure is above or below the rest of the web is in the number and in the arrow beside it.

Every figure here comes from a sample, not from counting every site — so it carries a margin: how much it could move if we had happened to sample different pages. A figure measured on a thousand pages has a wide margin; one measured on a hundred thousand has a narrow one. It matters for one thing: two figures that differ by less than the wider of their margins are not one above the other, they are tied. That is why nothing here has a position number.

Every technology in this category the census can publish a figure for, including the ones above. A technology is here when it has all four dimensions and enough sample to publish; a technology that belongs to two categories is in both.

TechnologyAWCSMonth by month
Proton Mail

Proton Mail

Sample
n=199
Coverage
95.7%
Margin
±3.76
The web overall
21.0%

Two figures closer together than ±3.76 are tied, not ranked.

Proton Mail scores 26.3%26.3%
Proton Mail: 5 months, no significant change= −0.1
Apple iCloud Mail

Apple iCloud Mail

Sample
n=5,565
Coverage
94.4%
Margin
±0.71
The web overall
21.0%

Two figures closer together than ±0.71 are tied, not ranked.

Apple iCloud Mail scores 24.4%24.4%
Apple iCloud Mail: 5 months, no significant change= −0.0
Google Workspace

Google Workspace

Sample
n=21,433
Coverage
96.0%
Margin
±0.36
The web overall
21.0%

Two figures closer together than ±0.36 are tied, not ranked.

Google Workspace scores 23.8%23.8%
Google Workspace: 5 months, up▲ +0.9
Microsoft 365

Microsoft 365

Sample
n=19,850
Coverage
96.4%
Margin
±0.38
The web overall
21.0%

Two figures closer together than ±0.38 are tied, not ranked.

Microsoft 365 scores 19.5%19.5%
Microsoft 365: 5 months, up▲ +0.7