--- title: "Mailgun vs SMTP2GO: Which is searched more?" description: "Is Mailgun or SMTP2GO more popular in search? Compare estimated monthly branded-search demand and Share of Search inside the Transactional email services 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/mailgun-vs-smtp2go" publisher: "Brandwave" --- # Mailgun vs SMTP2GO: Which is searched more? Is Mailgun or SMTP2GO more popular in search? Compare estimated monthly branded-search demand and Share of Search inside the Transactional email services 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**: Mailgun and SMTP2GO - **Competitive set**: Transactional email services - **Market**: Global - **Month measured**: Sep 2026 - **Mailgun Share of Search**: 12.2% - **SMTP2GO Share of Search**: 6.7% ## Is Mailgun or SMTP2GO more popular in search? - In September 2026, Mailgun had more branded searches than SMTP2GO among transactional email services worldwide. Mailgun had about 74,100 branded searches, while SMTP2GO had 40,500. Mailgun made up 12.2% of all transactional email service searches we track, and SMTP2GO accounted for 6.7%. - Mailgun was ahead of SMTP2GO in every measured month of the 12 months ending September 2026. - Across the 12 months ending September 2026, Mailgun’s share of searches among transactional email services worldwide moved from 14.8% to 12.2%, and its estimated monthly branded searches moved from 110K to 74.1K. - Across the 12 months ending September 2026, SMTP2GO’s share of searches among transactional email services worldwide moved from 5.4% to 6.7%, and its estimated monthly branded searches held steady at 40.5K. ## Top transactional email services in ChatGPT and Google AI Overviews In three ChatGPT questions and two Google AI Overviews, Mailgun was mentioned in four out of five: in all three ChatGPT answers and in one of the two Google AI Overviews. SMTP2GO was mentioned in two out of five: not in any of the three ChatGPT answers, but in both Google AI Overviews. Mailgun was listed before SMTP2GO in four out of 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 | | --- | --- | --- | --- | --- | | Postmark | 1st | 3 of 3 | 2 of 2 | 5 of 5 | | Resend | 2nd | 3 of 3 | 1 of 2 | 4 of 5 | | Amazon SES | 3rd | 3 of 3 | 2 of 2 | 5 of 5 | | Twilio SendGrid | 4th | 1 of 3 | 2 of 2 | 3 of 5 | | Mailgun | 5th | 3 of 3 | 1 of 2 | 4 of 5 | | SMTP2GO | 6th | 0 of 3 | 2 of 2 | 2 of 5 | | Mailjet | Not ranked | 0 of 3 | 0 of 2 | 0 of 5 | | Mailtrap | Not ranked | 0 of 3 | 0 of 2 | 0 of 5 | ## Every AI answer about transactional email services - Asked ChatGPT "Which transactional email service should I use?": 1. Resend, 2. Postmark, 3. Amazon SES, 4. Mailgun - Asked ChatGPT "What are the best transactional email services?": 1. Resend, 2. Postmark, 3. Amazon SES, 4. Twilio SendGrid, 5. Mailgun - Asked ChatGPT "What's the best transactional email service for app notifications?": 1. Resend, 2. Postmark, 3. Amazon SES, 4. Mailgun - Searched Google, AI Overview "transactional email service": 1. Postmark, 2. Mailgun, 3. Twilio SendGrid, 4. SMTP2GO, 5. Resend, 6. Amazon SES - Searched Google, AI Overview "email delivery service": 1. Amazon SES, 2. Postmark, 3. Twilio SendGrid, 4. SMTP2GO Not named in any answer: Mailjet and Mailtrap. Brands are listed in the order each answer named them. The answers were collected in the United States on October 21, 2026. ## How did search popularity change for transactional email services worldwide in September 2026? - In September 2026, Mailgun lost share of searches among transactional email services worldwide, from 12.7% to 12.2%. ## Month by month | Month | Mailgun estimated searches | Mailgun Share of Search | Mailgun rank | SMTP2GO estimated searches | SMTP2GO Share of Search | SMTP2GO rank | | --- | --- | --- | --- | --- | --- | --- | | Oct 2025 | 110K | 14.8% | 2 | 40.5K | 5.4% | 6 | | Nov 2025 | 110K | 16.7% | 2 | 40.5K | 6.1% | 6 | | Dec 2025 | 90.6K | 14.2% | 2 | 40.5K | 6.3% | 6 | | Jan 2026 | 110K | 15.8% | 2 | 49.5K | 7.1% | 6 | | Feb 2026 | 110K | 16.3% | 2 | 40.5K | 6% | 7 | | Mar 2026 | 110K | 14.1% | 2 | 49.5K | 6.3% | 6 | | Apr 2026 | 110K | 15.7% | 2 | 40.5K | 5.8% | 8 | | May 2026 | 90.7K | 14% | 2 | 40.5K | 6.2% | 7 | | Jun 2026 | 90.7K | 13.7% | 2 | 40.5K | 6.1% | 7 | | Jul 2026 | 90.7K | 14.5% | 2 | 40.5K | 6.5% | 8 | | Aug 2026 | 74.2K | 12.7% | 3 | 40.5K | 6.9% | 8 | | Sep 2026 | 74.1K | 12.2% | 3 | 40.5K | 6.7% | 8 | ## How each brand is measured Brandwave collects information about searches that people make online using Mailgun’s and SMTP2GO’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. - **Mailgun**: Measured on the search terms “mailgun” and “mailgun email”, summed into one figure. - **SMTP2GO**: Measured on the search term “smtp2go”. - [Mailgun profile](/demand/global-en/brands/mailgun) - [SMTP2GO profile](/demand/global-en/brands/smtp2go) - [All transactional email services worldwide](/demand/global-en/categories/transactional-email-services): 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 Mailgun or SMTP2GO more popular in search? In September 2026, Mailgun had more branded searches than SMTP2GO among transactional email services worldwide. Mailgun had about 74,100 branded searches, while SMTP2GO had 40,500. Mailgun made up 12.2% of all transactional email service searches we track, and SMTP2GO accounted for 6.7%. ## Cite this page Brandwave. "Mailgun vs SMTP2GO: Which is searched more?". https://gobrandwave.com/demand/global-en/compare/mailgun-vs-smtp2go This page is also available as HTML at https://gobrandwave.com/demand/global-en/compare/mailgun-vs-smtp2go. Brandwave publishes an index of its Markdown pages at https://gobrandwave.com/llms.txt.