Brandwave

Gmail, Outlook and Yahoo Mail:Which are most popular?

In September 2026, Gmail drew 63.5% of estimated branded searches across these three brands within global English language branded search, ahead of Outlook at 23.8%. When we checked with ChatGPT and Google AI Overviews, Gmail was mentioned most often, in four of the five answers. Of all seven brands we track in email providers, Gmail was the most recommended and Outlook was third.

All three are email providers worldwide. See all email providers

Brands in this comparisonAny 10 or fewer published brands worldwide
  • Gmail
  • Outlook
  • Yahoo Mail

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Gmail, Outlook and Yahoo Mail in ChatGPT and Google AI Overviews

In three ChatGPT questions and two Google AI Overviews, Gmail was mentioned most often, in four of the five answers. Of all seven brands we track in email providers, Gmail was the most recommended and Outlook was third. Yahoo Mail, which ranked third in searches, was not mentioned at all.

Most recommended by AI

Brands get a higher ranking if they are mentioned earlier in the answers.

  1. Gmail1st
  2. Proton Mail2nd
  3. Outlook3rd
  4. Fastmail4th
  5. iCloud5th
  6. Zoho Mail6th
  7. Yahoo Mail–

Mentioned by AI

Each dot is one answer, filled in when that answer mentions the brand.

  • Proton Mail4 of 5Named in 3 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Gmail4 of 5Named in 3 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Fastmail3 of 5Named in 3 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • iCloud3 of 5Named in 3 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Outlook3 of 5Named in 3 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Zoho Mail1 of 5Named in 1 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Yahoo Mail0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers

See every answer about email providers

5 answers

Not named in any answer:

Brands are shown in the order each answer named them. The survey took place in the United States on October 19, 2026.

How these brands compare month by month

Share of Search here is each brand's branded searches divided by the total for the brands in this comparison. Add or remove a brand and every share is worked out again.

  • Gmail
  • Outlook
  • Yahoo Mail
Gmail, Outlook and Yahoo Mail worldwide, by month

Share of searches by month for Gmail, Outlook, Yahoo Mail. The figures are in the table below the chart.

View monthly share of searches table
MonthGmailOutlookYahoo Mail
Oct 202561.8%23.1%15.1%
Nov 202557%26%17%
Dec 202557%26%17%
Jan 202656.9%26.1%17%
Feb 202660.3%24.9%14.8%
Mar 202661.8%23.2%15.1%
Apr 202661.8%23.2%15.1%
May 202656.9%26.1%17%
Jun 202658.4%24.2%17.4%
Jul 202661.6%23.3%15.1%
Aug 202660.2%25%14.8%
Sep 202663.5%23.8%12.7%

  1. 1.Gmail

    63.5%

    Held 1st. 414M estimated branded searches, +22.5% vs prior month. Share +3.2 points.

  2. 2.Outlook

    23.8%

    Held 2nd. 155M estimated branded searches, +10.8% vs prior month. Share -1.2 points.

  3. 3.Yahoo Mail

    12.7%

    Held 3rd. 83.1M estimated branded searches, 0% vs prior month. Share -2.1 points.

How the Brand Demand Index is measured