--- title: "Airmail vs Microsoft Outlook: Which is searched more?" description: "Is Airmail or Microsoft Outlook more popular in search? Compare estimated monthly branded-search demand and Share of Search inside the Email clients set worldwide. Branded searches tell you how often people look for a brand by name or related terms. Comparing these searches across competitors helps you see how popular each brand is over time." canonical: "https://gobrandwave.com/demand/global-en/compare/airmail-vs-microsoft-outlook" publisher: "Brandwave" --- # Airmail vs Microsoft Outlook: Which is searched more? Is Airmail or Microsoft Outlook more popular in search? Compare estimated monthly branded-search demand and Share of Search inside the Email clients set worldwide. Branded searches tell you how often people look for a brand by name or related terms. Comparing these searches across competitors helps you see how popular each brand is over time. ## Key facts - **Compared**: Airmail and Microsoft Outlook - **Competitive set**: Email clients - **Market**: Global - **Month measured**: Sep 2026 - **Airmail Share of Search**: 1% - **Microsoft Outlook Share of Search**: 83.1% ## Is Airmail or Microsoft Outlook more popular in search? - In September 2026, Microsoft Outlook had more branded searches than Airmail among email clients worldwide. Microsoft Outlook had about 1.2 million branded searches, while Airmail had 14,900. Microsoft Outlook made up 83.1% of all email client searches we track, and Airmail accounted for 1%. - Microsoft Outlook was ahead of Airmail in every measured month of the 12 months ending September 2026. - Across the 12 months ending September 2026, Airmail’s share of searches among email clients worldwide moved from 1.1% to 1%, and its estimated monthly branded searches moved from 22.3K to 14.9K. - Across the 12 months ending September 2026, Microsoft Outlook’s share of searches among email clients worldwide moved from 86.7% to 83.1%, and its estimated monthly branded searches moved from 1.8M to 1.2M. ## Top email clients in ChatGPT and Google AI Overviews In three ChatGPT questions and two Google AI Overviews, Microsoft Outlook appeared in all five answers. Airmail did not appear in any of the five answers. Brands get a higher AI rank if they are mentioned earlier in the answers that list options. | Brand | AI rank | ChatGPT answers that named it | Google AI Overviews that named it | All answers that named it | | --- | --- | --- | --- | --- | | Microsoft Outlook | 1st | 3 of 3 | 2 of 2 | 5 of 5 | | Apple Mail | 2nd | 3 of 3 | 2 of 2 | 5 of 5 | | Thunderbird | 3rd | 3 of 3 | 1 of 2 | 4 of 5 | | Spark | 4th | 2 of 3 | 2 of 2 | 4 of 5 | | Proton Mail | 5th | 2 of 3 | 1 of 2 | 3 of 5 | | Superhuman | 6th | 2 of 3 | 1 of 2 | 3 of 5 | | Airmail | Not ranked | 0 of 3 | 0 of 2 | 0 of 5 | | Newton | Not ranked | 0 of 3 | 0 of 2 | 0 of 5 | ## Every AI answer about email clients - Asked ChatGPT "Which email client should I use?": 1. Microsoft Outlook, 2. Apple Mail, 3. Proton Mail, 4. Thunderbird - Asked ChatGPT "What are the best email clients?": 1. Microsoft Outlook, 2. Thunderbird, 3. Apple Mail, 4. Spark, 5. Proton Mail, 6. Superhuman - Asked ChatGPT "What's the best email client for daily email management?": 1. Spark, 2. Microsoft Outlook, 3. Thunderbird, 4. Apple Mail, 5. Superhuman - Searched Google, AI Overview "email client": 1. Thunderbird, 2. Microsoft Outlook, 3. Spark, 4. Apple Mail - Searched Google, AI Overview "best email app": 1. Microsoft Outlook, 2. Apple Mail, 3. Spark, 4. Proton Mail, 5. Superhuman Not named in any answer: Airmail and Newton. Brands are listed in the order each answer named them. The answers were collected in the United States on October 20, 2026. ## How did search popularity change for email clients worldwide in September 2026? - In September 2026, Microsoft Outlook lost share of searches among email clients worldwide, from 83.8% to 83.1%. - Estimated monthly branded searches for Airmail worldwide fell 33.2% over 12 measured months, from 22.3K to 14.9K in September 2026. ## Month by month | Month | Airmail estimated searches | Airmail Share of Search | Airmail rank | Microsoft Outlook estimated searches | Microsoft Outlook Share of Search | Microsoft Outlook rank | | --- | --- | --- | --- | --- | --- | --- | | Oct 2025 | 22.3K | 1.1% | 6 | 1.8M | 86.7% | 1 | | Nov 2025 | 18.2K | 1% | 6 | 1.5M | 84.8% | 1 | | Dec 2025 | 22.3K | 1.5% | 5 | 1.2M | 81.6% | 1 | | Jan 2026 | 18.2K | 1% | 6 | 1.5M | 84.1% | 1 | | Feb 2026 | 12.2K | 0.7% | 6 | 1.5M | 86.4% | 1 | | Mar 2026 | 14.9K | 0.85% | 6 | 1.5M | 85.7% | 1 | | Apr 2026 | 14.9K | 1% | 6 | 1.2M | 84.4% | 1 | | May 2026 | 12.2K | 0.85% | 6 | 1.2M | 84.9% | 1 | | Jun 2026 | 18.2K | 1.3% | 6 | 1.2M | 85.1% | 1 | | Jul 2026 | 12.2K | 1% | 6 | 1M | 83.5% | 1 | | Aug 2026 | 18.2K | 1.3% | 6 | 1.2M | 83.8% | 1 | | Sep 2026 | 14.9K | 1% | 6 | 1.2M | 83.1% | 1 | ## How each brand is measured Brandwave collects information about searches that people make online using Airmail’s and Microsoft Outlook’s names. When viewed over time, estimated search volumes for these branded terms can be used to understand whether interest in the brands is growing, holding steady, or fading. - **Airmail**: Measured on the search terms “airmail client”, “airmail email” and “airmail email client”, summed into one figure. - **Microsoft Outlook**: Measured on the search term “microsoft outlook”. - [Airmail profile](/demand/global-en/brands/airmail) - [Microsoft Outlook profile](/demand/global-en/brands/microsoft-outlook) - [All email clients worldwide](/demand/global-en/categories/email-clients): The set both shares are measured inside, 8 brands. ## Methodology - [How is the Brand Demand Index measured?](/demand/methodology): Where the figures come from, what they compare, and how they may be reused. ## Frequently asked questions ### Is Airmail or Microsoft Outlook more popular in search? In September 2026, Microsoft Outlook had more branded searches than Airmail among email clients worldwide. Microsoft Outlook had about 1.2 million branded searches, while Airmail had 14,900. Microsoft Outlook made up 83.1% of all email client searches we track, and Airmail accounted for 1%. ## Cite this page Brandwave. "Airmail vs Microsoft Outlook: Which is searched more?". https://gobrandwave.com/demand/global-en/compare/airmail-vs-microsoft-outlook This page is also available as HTML at https://gobrandwave.com/demand/global-en/compare/airmail-vs-microsoft-outlook. Brandwave publishes an index of its Markdown pages at https://gobrandwave.com/llms.txt.