--- title: "SMTP2GO: search popularity worldwide" description: "SMTP2GO is a transactional email service. 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/brands/smtp2go" publisher: "Brandwave" --- # SMTP2GO: search popularity worldwide SMTP2GO is a transactional email service. 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 - **Brand**: SMTP2GO - **Market**: Global - **Measured month**: Sep 2026 - **Share of Search among transactional email services**: 6.7% ## Where the brand sits | Competitive set | Rank | Share of Search | Estimated monthly branded searches | | --- | --- | --- | --- | | Transactional email services | 8 | 6.7% | 40.5K | - [Transactional email services](/demand/global-en/categories/transactional-email-services) ## Top transactional email services in ChatGPT and Google AI Overviews In three ChatGPT questions and 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. SMTP2GO is the sixth most recommended of the eight. 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 has branded search demand for SMTP2GO changed worldwide over the last 12 months? - Across the 12 months ending September 2026, estimated monthly branded searches for SMTP2GO worldwide held steady at 40.5K. - Across the 12 months ending September 2026, SMTP2GO’s share of searches among transactional email services worldwide increased from 5.4% to 6.7%. - Across the 12 months ending September 2026, SMTP2GO’s share of searches among transactional email services worldwide peaked at 7.1% in January 2026 and was lowest at 5.4% in October 2025. - Across the 12 months ending September 2026, SMTP2GO fell from 6th to 8th among transactional email services worldwide. ## How did search popularity change for transactional email services worldwide in September 2026? - In September 2026, Mailjet overtook Resend to rank 4th among transactional email services worldwide, with 12.2% of the searches. - In September 2026, Twilio SendGrid lost share of searches among transactional email services worldwide, from 35.9% to 34.4%. - In September 2026, Postmark lost share of searches among transactional email services worldwide, from 13.3% to 12.7%. - In September 2026, Mailgun lost share of searches among transactional email services worldwide, from 12.7% to 12.2%. - Estimated monthly branded searches for Resend worldwide rose 200.4% over 12 measured months, from 17K to 50.9K in September 2026. - Estimated monthly branded searches for Amazon SES worldwide rose 22.4% over 12 measured months, from 33.1K to 40.5K in September 2026. ## Historical estimated branded-search demand | Month | Competitive set | Estimated monthly branded searches | Share of Search | Rank | | --- | --- | --- | --- | --- | | Oct 2025 | Transactional email services | 40.5K | 5.4% | 6 | | Nov 2025 | Transactional email services | 40.5K | 6.1% | 6 | | Dec 2025 | Transactional email services | 40.5K | 6.3% | 6 | | Jan 2026 | Transactional email services | 49.5K | 7.1% | 6 | | Feb 2026 | Transactional email services | 40.5K | 6% | 7 | | Mar 2026 | Transactional email services | 49.5K | 6.3% | 6 | | Apr 2026 | Transactional email services | 40.5K | 5.8% | 8 | | May 2026 | Transactional email services | 40.5K | 6.2% | 7 | | Jun 2026 | Transactional email services | 40.5K | 6.1% | 7 | | Jul 2026 | Transactional email services | 40.5K | 6.5% | 8 | | Aug 2026 | Transactional email services | 40.5K | 6.9% | 8 | | Sep 2026 | Transactional email services | 40.5K | 6.7% | 8 | ## How are SMTP2GO’s branded searches counted? Brandwave collects information about searches that people make online using SMTP2GO’s name. When viewed over time, estimated search volumes for this branded term can be used to understand whether interest in the brand is growing, holding steady, or fading. - “smtp2go” ## Which transactional email services compete with SMTP2GO? - [Twilio SendGrid](/demand/global-en/brands/sendgrid) - [Postmark](/demand/global-en/brands/postmark) - [Mailgun](/demand/global-en/brands/mailgun): Head-to-head: /demand/global-en/compare/mailgun-vs-smtp2go - [Mailjet](/demand/global-en/brands/mailjet): Head-to-head: /demand/global-en/compare/mailjet-vs-smtp2go - [Resend](/demand/global-en/brands/resend): Head-to-head: /demand/global-en/compare/resend-vs-smtp2go - [Mailtrap](/demand/global-en/brands/mailtrap): Head-to-head: /demand/global-en/compare/mailtrap-vs-smtp2go - [Amazon SES](/demand/global-en/brands/amazon-ses): Head-to-head: /demand/global-en/compare/amazon-ses-vs-smtp2go ## Methodology - [How is the Brand Demand Index measured?](/demand/methodology): Where the figures come from, what they compare, and how they may be reused. ## Cite this page Brandwave. "SMTP2GO: search popularity worldwide". https://gobrandwave.com/demand/global-en/brands/smtp2go This page is also available as HTML at https://gobrandwave.com/demand/global-en/brands/smtp2go. Brandwave publishes an index of its Markdown pages at https://gobrandwave.com/llms.txt.