How popular isOutlook in search?

Q: Who owns Outlook?

Outlook is owned by Microsoft. Brandwave also tracks Microsoft Copilot, GitHub Actions, GitHub Copilot, LinkedIn, LinkedIn Ads, Microsoft 365, Microsoft Advertising, Microsoft Authenticator, Microsoft Azure, Microsoft Bookings, Microsoft Clarity, Microsoft Designer, Microsoft Dynamics 365, Microsoft Dynamics 365 Business Central, Microsoft Edge, Microsoft Entra, Microsoft Forms, Microsoft Power BI, Microsoft PowerPoint, Microsoft Surface, Microsoft Teams, Microsoft Translator, Microsoft Visio, Minecraft, OneDrive, OneNote, Power Automate, Power BI, SharePoint, Xbox and Xbox Game Pass, owned by the same company, worldwide.

In September 2026, there were an estimated 155M branded searches for Outlook worldwide which held steady over the last 12 months. Outlook holds 23.5% estimated Share of Search among email providers worldwide and is ranked 2nd of 5 competitors for search popularity. These are worldwide searches for English-language branded terms.

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Which email providers compete with Outlook?

Outlook against email providers worldwide, by month

Month	Gmail	Outlook	Yahoo Mail	Proton Mail	Zoho Mail
Oct 2025	61.2%	22.8%	14.9%	0.5%	0.5%
Nov 2025	56.4%	25.8%	16.9%	0.56%	0.37%
Dec 2025	56.4%	25.8%	16.9%	0.56%	0.37%
Jan 2026	56.3%	25.8%	16.8%	0.68%	0.37%
Feb 2026	59.7%	24.6%	14.7%	0.59%	0.4%
Mar 2026	61.2%	22.9%	14.9%	0.61%	0.33%
Apr 2026	61.1%	22.9%	14.9%	0.61%	0.41%
May 2026	56.3%	25.8%	16.8%	0.68%	0.37%
Jun 2026	57.7%	23.9%	17.2%	0.7%	0.47%
Jul 2026	60.8%	23%	15%	0.74%	0.49%
Aug 2026	59.5%	24.7%	14.6%	0.72%	0.48%
Sep 2026	62.8%	23.5%	12.6%	0.62%	0.42%

Rank	Brand	Share of Search	Estimated monthly branded searches	vs prior month	Share change
1, held 1st	Gmail Google	62.8%	414M	+22.5%	+3.3 points
2, held 2nd	Outlook Microsoft	23.5%	155M	+10.8%	-1.1 points
3, held 3rd	Yahoo Mail	12.6%	83.1M	0%	-2 points
4, held 4th	Proton Mail	0.62%	4.1M	-0.03%	-0.1 points
5, held 5th	Zoho Mail Zoho	0.42%	2.7M	+<0.01%	-0.1 points

1.Gmail
62.8%
Held 1st. 414M estimated branded searches, +22.5% vs prior month. Share +3.3 points.
2.Outlook
23.5%
Held 2nd. 155M estimated branded searches, +10.8% vs prior month. Share -1.1 points.
3.Yahoo Mail
12.6%
Held 3rd. 83.1M estimated branded searches, 0% vs prior month. Share -2 points.
4.Proton Mail
0.62%
Held 4th. 4.1M estimated branded searches, -0.03% vs prior month. Share -0.1 points.
5.Zoho Mail
0.42%
Held 5th. 2.7M estimated branded searches, +<0.01% vs prior month. Share -0.1 points.

Compare search popularity between Outlook and its closest rivals

Every comparison with Outlook

10 comparisons

How has branded search demand for Outlook changed worldwide over the last 12 months?

3 findings

Across the 12 months ending September 2026, estimated monthly branded searches for Outlook worldwide held steady, from 154M to 155M.
Across the 12 months ending September 2026, Outlook’s estimated Share of Search among email providers worldwide increased from 22.8% to 23.5%.
Across the 12 months ending September 2026, Outlook’s estimated Share of Search among email providers worldwide peaked at 25.8% in January 2026 and was lowest at 22.8% in October 2025.

How did search popularity change for email providers worldwide in September 2026?

5 changes

In September 2026, Gmail gained estimated Share of Search among email providers worldwide, from 59.5% to 62.8%.
In September 2026, Yahoo Mail lost estimated Share of Search among email providers worldwide, from 14.6% to 12.6%.
In September 2026, Outlook lost estimated Share of Search among email providers worldwide, from 24.7% to 23.5%.
Estimated monthly branded searches for Proton Mail worldwide rose 22% over 12 measured months, from 3.4M to 4.1M in September 2026.
Estimated monthly branded searches for Zoho Mail worldwide fell 18.4% over 12 measured months, from 3.4M to 2.7M in September 2026.

Where does Outlook compete?

Outlook is ranked in two competitor sets. Each share is worked out among that set's brands, so it differs from set to set.

Competitor set	Rank	Share of Search	Ranking
Email providers	2nd of 5	23.5%	Shown above
Calendar apps	1st of 7	93.2%	Show ranking

How is Outlook measured?

Brandwave collects information about searches that people make online using Outlook’s name. When viewed over time, estimated search volumes for these branded terms can be used to understand whether interest in the brand is growing, holding steady, or fading.

3 branded search terms