Mailgun vs Twilio SendGrid:Which is more popular?
In September 2026, Twilio SendGrid had more branded searches than Mailgun among transactional email services worldwide. Twilio SendGrid had about 209,000 branded searches, while Mailgun had 74,100. Twilio SendGrid made up 34.4% of all transactional email service searches we track, and Mailgun accounted for 12.2%. When we asked ChatGPT and Google AI Overviews about transactional email services, Mailgun appeared in four of the five answers and Twilio SendGrid in three. Mailgun was mentioned before Twilio SendGrid in three out of five answers.
Who do people search for more?
Twilio SendGrid, about 3 searches for every 1 for Mailgun
Who does AI mention more?
Mailgun, mentioned in 4 of 5 answers, Twilio SendGrid in 3
Who does AI recommend more?
Mailgun, named ahead of Twilio SendGrid in 3 of 5 answers
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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. Twilio SendGrid was mentioned in three out of five: in one of the three ChatGPT answers and in both Google AI Overviews. Mailgun was listed before Twilio SendGrid in three out of five answers.
Most recommended by AI
Brands get a higher ranking if they are mentioned earlier in the answers.
Postmark1st
Resend2nd
Amazon SES3rd- Twilio SendGrid4th
- Mailgun5th
- SMTP2GO6th
Mailjet–
Mailtrap–
Mentioned by AI
Each dot is one answer, filled in when that answer mentions the brand.
- Postmark5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
- Amazon SES5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
- Mailgun4 of 5Named in 3 of 3 ChatGPT answersNamed in 1 of 2 Google answers
- Resend4 of 5Named in 3 of 3 ChatGPT answersNamed in 1 of 2 Google answers
- Twilio SendGrid3 of 5Named in 1 of 3 ChatGPT answersNamed in 2 of 2 Google answers
- SMTP2GO2 of 5Named in 0 of 3 ChatGPT answersNamed in 2 of 2 Google answers
- Mailjet0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
- Mailtrap0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
See every answer about transactional email services
5 answers
Asked ChatGPT
“Which transactional email service should I use?”
Asked ChatGPT
“What are the best transactional email services?”
Asked ChatGPT
“What's the best transactional email service for app notifications?”
Searched Google, AI Overview
“transactional email service”
Searched Google, AI Overview
“email delivery service”
Brands are shown in the order each answer named them. The survey took place in the United States on October 21, 2026.
Is Mailgun or Twilio SendGrid more popular in search?
This chart shows how often people search Google for Mailgun and Twilio SendGrid by name. Each line represents a brand's share of searches for all eight transactional email services we track, month by month, from English-language searches worldwide.
Share of searches by month for Twilio SendGrid, Mailgun. The figures are in the table below the chart.
View monthly share of searches table
| Month | Twilio SendGrid | Postmark | Mailgun | Mailjet | Resend | Mailtrap | Amazon SES | SMTP2GO |
|---|---|---|---|---|---|---|---|---|
| Oct 2025 | 41.7% | 8.5% | 14.8% | 14.8% | 2.3% | 8.1% | 4.4% | 5.4% |
| Nov 2025 | 38.5% | 9.6% | 16.7% | 13.7% | 2.8% | 7.5% | 5% | 6.1% |
| Dec 2025 | 39.7% | 12% | 14.2% | 11.6% | 3.3% | 7.8% | 5.2% | 6.3% |
| Jan 2026 | 36.3% | 11.1% | 15.8% | 12.9% | 4% | 7.1% | 5.8% | 7.1% |
| Feb 2026 | 37.5% | 11.4% | 16.3% | 10.9% | 4.6% | 7.3% | 6% | 6% |
| Mar 2026 | 39.7% | 9.9% | 14.1% | 11.6% | 5.5% | 7.8% | 5.2% | 6.3% |
| Apr 2026 | 36.4% | 11% | 15.7% | 10.5% | 6.1% | 8.7% | 5.8% | 5.8% |
| May 2026 | 39.2% | 11.8% | 14% | 9.3% | 6.7% | 7.7% | 5.1% | 6.2% |
| Jun 2026 | 38.3% | 11.6% | 13.7% | 11.2% | 6.7% | 7.5% | 5% | 6.1% |
| Jul 2026 | 33.5% | 12.3% | 14.5% | 9.7% | 9.1% | 8% | 6.5% | 6.5% |
| Aug 2026 | 35.9% | 13.3% | 12.7% | 8.5% | 8.7% | 7% | 6.9% | 6.9% |
| Sep 2026 | 34.4% | 12.7% | 12.2% | 12.2% | 8.4% | 6.7% | 6.7% | 6.7% |
How has the Mailgun and Twilio SendGrid comparison changed over the last 12 months?
3 findings
- Twilio SendGrid was ahead of Mailgun 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, Twilio SendGrid’s share of searches among transactional email services worldwide moved from 41.7% to 34.4%, and its estimated monthly branded searches moved from 311K to 209K.
How did search popularity change for transactional email services worldwide in September 2026?
2 changes
In September 2026, Twilio SendGrid lost share of searches among transactional email services worldwide, from 35.9% to 34.4%.
In September 2026, Mailgun lost share of searches among transactional email services worldwide, from 12.7% to 12.2%.
How are branded searches counted?
4 search terms
Brandwave collects information about searches that people make online using Mailgun’s and Twilio SendGrid’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
2 branded search terms
- mailgun
- mailgun email
Twilio SendGrid
2 branded search terms
- sendgrid
- twilio sendgrid
Other head-to-heads among transactional email services
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