AIRANKS — The Authoritative Rankings for AI Web Content

AIRANKS measures AI visibility: we ask AI models real product and service questions, capture the complete answers as immutable observations, and publish what they contain — which brands were mentioned, which domains were cited, and which exact pages were linked. Every domain gets an AIR score from 1–10 (a decile of visibility in the active dataset; 0 means insufficient data), with the methodology in the open.

AIR

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The Question

← all rankings / dataset COBALT

What is the best free email account

Proton Mail takes the top spot in 100.0% of resamples. Of 7 ranked brands, only 6 hold a position we'd call firm.

0
answers sampled
0
brands named
1,000
bootstrap resamples

Who AI Cites For This Question

25 cited pages · bars vs the leader

Storage limits in Outlook.com | Microsoft Supportsupport.microsoft.comsupport.microsoft.com/en-US/Outloo…om?utm=airanks.net344
How your Google storage works - Gmail Helpsupport.google.comsupport.google.com/mail/answer/9312312?utm=airanks.net244
Proton plans explained: Proton Free, Proton Mail Plus, Proton Unlimited, Proton Duo, Proton Family, and Proton Visionary | Protonproton.meproton.me/support/proton-plans?utm=airanks.net170
Proton Mail: Sign-upaccount.proton.meaccount.proton.me/mail/signup?utm=airanks.net94
Manage your storage in Drive, Gmail & Photos - Gmail Helpsupport.google.comsupport.google.com/mail/answer/6374270?utm=airanks.net65
How to increase your storage space | Protonproton.meproton.me/support/increase-storage-space?utm=airanks.net34
How to unlock extra storage when you join Proton Mail Free | Protonproton.meproton.me/support/get-started-mail?utm=airanks.net26
Proton Mail: Get a free email account with privacy and encryption | Protonproton.meproton.me/mail?utm=airanks.net15
Create a free email account or choose a paid plan | Protonproton.meproton.me/mail/pricing?utm=airanks.net14
Proton Mail Support | Protonproton.meproton.me/support/mail?utm=airanks.net13

The Ranking, With Its Uncertainty

Proton Mail locked Proton Mail — ci 1.00–1.00 · n=375 · 100.0% of resamples held this rank · named in 97% of answers
Gmail locked Gmail — ci 0.83–0.83 · n=375 · 100.0% of resamples held this rank · named in 67% of answers
Outlook locked Outlook — ci 0.67–0.67 · n=375 · 100.0% of resamples held this rank · named in 74% of answers
Yahoo Mail locked Yahoo Mail — ci 0.50–0.50 · n=375 · 100.0% of resamples held this rank · named in 30% of answers
iCloud Mail locked iCloud Mail — ci 0.33–0.33 · n=375 · 100.0% of resamples held this rank · named in 9% of answers
Tuta locked Tuta — ci 0.17–0.17 · n=375 · 99.5% of resamples held this rank · named in 2% of answers
Zoho gathering Zoho — gathering data, n=375. No bootstrap interval yet.

The Incomparability Lattice

what the intervals separate, not what the list claims

An edge means one brand's interval sits strictly above another's — zero overlap. No edge between two brands is not a gap in the drawing, it is the finding: their intervals overlap, and the bootstrap cannot tell them apart. Brands on the same rung are incomparable, not tied — the ranking above orders them anyway because a list has to print a total order; this diagram is the honest version.

Proton Mail

1.00–1.00

Gmail

0.83–0.83

Outlook

0.67–0.67

Yahoo Mail

0.50–0.50

iCloud Mail

0.33–0.33

Tuta

0.17–0.17

6 of 7 brands measured · 5 dominance edges · 6 rungs · 0 pairs the data does not separate