Brandwave

How popular isPostmark?

In September 2026, people searched for Postmark by name about 78,900 times worldwide, a 21.7% increase from the previous year. These searches made up 12.7% of all global transactional email service searches, placing Postmark second out of eight services. When we asked both ChatGPT and Google AI Overviews about transactional email services, Postmark appeared in all answers and was the most recommended of the eight.

Search and AI answers in September 2026

Postmark is the second most searched of 8 competitors and the most recommended in AI answers.

  1. Twilio SendGridShare of searches 34.4%Mentioned in 3 of 5 AI answersPlace in AI recommendations 4th
  2. PostmarkShare of searches 12.7%Mentioned in 5 of 5 AI answersPlace in AI recommendations 1st
  3. MailgunShare of searches 12.2%Mentioned in 4 of 5 AI answersPlace in AI recommendations 5th
  4. MailjetShare of searches 12.2%Mentioned in 0 of 5 AI answersPlace in AI recommendations –
  5. ResendShare of searches 8.4%Mentioned in 4 of 5 AI answersPlace in AI recommendations 2nd

+3 more

Postmark website (opens in a new tab)

Follow Postmark and get free monthly updates on what changed

By continuing you'll get index updates and occasional product news from Brandwave. Unsubscribe any time. Privacy

Top transactional email services in ChatGPT and Google AI Overviews

In three ChatGPT questions and two Google AI Overviews, Postmark appeared in all five answers. Postmark is the most recommended of the eight.

Most recommended by AI

Brands get a higher ranking if they are mentioned earlier in the answers.

  1. Postmark1st
  2. Resend2nd
  3. Amazon SES3rd
  4. Twilio SendGrid4th
  5. Mailgun5th
  6. SMTP2GO6th
  7. Mailjet–
  8. 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

Not named in any answer:

Brands are shown in the order each answer named them. The survey took place in the United States on October 21, 2026.

Which transactional email services compete with Postmark?

Postmark against transactional email services worldwide, by month

Share of searches by month for Twilio SendGrid, Postmark, Mailgun, Mailjet, Resend, Mailtrap, Amazon SES, SMTP2GO. The figures are in the table below the chart.

View monthly share of searches table
MonthTwilio SendGridPostmarkMailgunMailjetResendMailtrapAmazon SESSMTP2GO
Oct 202541.7%8.5%14.8%14.8%2.3%8.1%4.4%5.4%
Nov 202538.5%9.6%16.7%13.7%2.8%7.5%5%6.1%
Dec 202539.7%12%14.2%11.6%3.3%7.8%5.2%6.3%
Jan 202636.3%11.1%15.8%12.9%4%7.1%5.8%7.1%
Feb 202637.5%11.4%16.3%10.9%4.6%7.3%6%6%
Mar 202639.7%9.9%14.1%11.6%5.5%7.8%5.2%6.3%
Apr 202636.4%11%15.7%10.5%6.1%8.7%5.8%5.8%
May 202639.2%11.8%14%9.3%6.7%7.7%5.1%6.2%
Jun 202638.3%11.6%13.7%11.2%6.7%7.5%5%6.1%
Jul 202633.5%12.3%14.5%9.7%9.1%8%6.5%6.5%
Aug 202635.9%13.3%12.7%8.5%8.7%7%6.9%6.9%
Sep 202634.4%12.7%12.2%12.2%8.4%6.7%6.7%6.7%

  1. 1.Twilio SendGrid

    34.4%

    Held 1st. 209K estimated branded searches, 0% vs prior month. Share -1.4 points.

  2. 2.Postmark

    12.7%

    Held 2nd. 77.3K estimated branded searches, 0% vs prior month. Share -0.5 points.

  3. 3.Mailgun

    12.2%

    Held 3rd. 74.1K estimated branded searches, -0.04% vs prior month. Share -0.5 points.

  4. 4.Mailjet

    12.2%

    Moved from 5th to 4th. 74K estimated branded searches, +49.5% vs prior month. Share +3.7 points.

  5. 5.Resend

    8.4%

    Moved from 4th to 5th. 50.9K estimated branded searches, +0.06% vs prior month. Share -0.3 points.

  6. 6.Mailtrap

    6.7%

    Held 6th. 40.8K estimated branded searches, -0.1% vs prior month. Share -0.3 points.

  7. 7.Amazon SES

    6.7%

    Held 7th. 40.5K estimated branded searches, 0% vs prior month. Share -0.3 points.

  8. 8.SMTP2GO

    6.7%

    Held 8th. 40.5K estimated branded searches, 0% vs prior month. Share -0.3 points.

Compare popularity between Postmark and its closest rivals

Every comparison with Postmark

13 comparisons

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

4 findings
  • Across the 12 months ending September 2026, estimated monthly branded searches for Postmark worldwide rose from 64.8K to 78.9K.
  • Across the 12 months ending September 2026, Postmark’s share of searches among transactional email services worldwide increased from 8.5% to 12.7%.
  • Across the 12 months ending September 2026, Postmark’s share of searches among transactional email services worldwide peaked at 13.3% in August 2026 and was lowest at 8.5% in October 2025.
  • Across the 12 months ending September 2026, Postmark rose from 4th to 2nd among transactional email services worldwide.

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

6 changes

  1. In September 2026, Mailjet overtook Resend to rank 4th among transactional email services worldwide, with 12.2% of the searches.

  2. In September 2026, Twilio SendGrid lost share of searches among transactional email services worldwide, from 35.9% to 34.4%.

  3. In September 2026, Postmark lost share of searches among transactional email services worldwide, from 13.3% to 12.7%.

  4. In September 2026, Mailgun lost share of searches among transactional email services worldwide, from 12.7% to 12.2%.

  5. Estimated monthly branded searches for Resend worldwide rose 200.4% over 12 measured months, from 17K to 50.9K in September 2026.

  6. Estimated monthly branded searches for Amazon SES worldwide rose 22.4% over 12 measured months, from 33.1K to 40.5K in September 2026.

How are Postmark’s branded searches counted?

5 search terms

Brandwave collects information about searches that people make online using Postmark’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.

  • dmarc digests
  • postmark
  • postmark dmarc
  • postmark email
  • postmarkapp

How the Brand Demand Index is measured

Who owns Postmark?

Postmark is owned by ActiveCampaign. Brandwave also tracks ActiveCampaign, owned by the same company, worldwide.

Do you work for Postmark? To request corrections or removal please contact us via our support page and we will be happy to assist.

Where does Postmark compete?

Postmark is ranked in three competitor sets. Each share is worked out among that set's brands, so it differs from set to set.
Competitor setRankShare of searchesRanking
Transactional email services2nd of 812.7%Shown above
Email API platforms2nd of 517.1%Show ranking
DMARC monitoring tools6th of 76.4%Show ranking
Creator with pink hair and a pink jacket

Is Postmark your brand?

Put your own campaigns, spend and outcomes next to this demand line, so you can see which of your marketing lined up with the movements above.

Start free