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Sites using Postmark

131 launches via launch platforms Category: Transactional Email #10 of 66 in Transactional Email Tracked since Apr 2026 Last seen: Jul 18, 2026 Website: postmarkapp.com

ActiveCampaign Postmark transactional email API.

Found via: Product Hunt 93 · Hacker News 16 · PeerPush 22 · StackScope Discovery (Indie) 17 · StackScope Wider Web 19

View: Launch platforms All sources StackScope Discovery StackScope Wider Web
Last 7 days 0.1% -0.0pp
Most used with Google Search Console, HSTS, Tailwind CSS
Top product types Productivity, Developer Tools, Marketing
Green hosting 47% vs 44% avg

Postmark has been detected on 131 launches we've crawled, with 14 of those in July 2026 (0.1% of the month's launches so far). The 7-day rolling share is 0.1%, roughly steady week on week. Most recent detection: OneUp Networks, today.

It's most commonly paired with Google Search Console, HSTS, and Tailwind CSS. By product type, the launches using it are most often Productivity (23%), Developer Tools (18%), and Marketing (18%). By estimated origin, the United States leads (45%), ahead of the United Kingdom (11%). By domain ending, launches using it are 1.6 times as likely as the average launch to live on a .com domain. The 131 scored launches using Postmark average a StackScope score of 7.0 out of 10, against 6.3 across all launches we score.

What kind of products ship with Postmark

97 launches

Productivity
22.68%
Developer Tools
17.53%
Marketing
17.53%
AI
9.28%
Finance
7.22%
Education
6.19%
E-commerce
4.12%
Health
4.12%
Crypto
3.09%
Social
3.09%
Content
2.06%
Games
2.06%
Hiring & HR
1.03%

Countries that use Postmark

Estimated origin for 55 of 131 launches

  • United States United States 45.45%
  • United Kingdom United Kingdom 10.91%
  • Germany Germany 5.45%
  • Italy Italy 5.45%
  • Canada Canada 3.64%
  • India India 3.64%
  • Austria Austria 1.82%
  • Bulgaria Bulgaria 1.82%
  • China China 1.82%
  • Denmark Denmark 1.82%
  • Estonia Estonia 1.82%
  • Spain Spain 1.82%
  • France France 1.82%

Share of new launches using Postmark

Each dot is one launch day. Line is the 7-day rolling average.

0.1%
last 7 days
-0.0pp vs prior week
0.1%
July so far
14 of 10,662 launches
131
launches all time
since Apr 2026
Postmark daily detection trend 5% 2% 0% May Jun Jul Jul 1, 2026: Adoption figures now count launches from launch platforms. Use the source view to include StackScope Discovery. Jul 3, 2026: Email provider detection improved: providers identified from mail configuration are now caught on a site's first crawl. Earlier data may slightly undercount. Apr 19 · 2 / 392 = 0.5% Apr 20 · 2 / 620 = 0.3% Apr 21 · 5 / 835 = 0.6% Apr 22 · 2 / 721 = 0.3% Apr 23 · 0 / 603 = 0.0% Apr 24 · 1 / 553 = 0.2% Apr 25 · 1 / 420 = 0.2% Apr 26 · 1 / 377 = 0.3% Apr 27 · 1 / 529 = 0.2% Apr 28 · 4 / 836 = 0.5% Apr 29 · 0 / 658 = 0.0% Apr 30 · 0 / 573 = 0.0% May 1 · 2 / 568 = 0.4% May 2 · 0 / 368 = 0.0% May 3 · 1 / 346 = 0.3% May 4 · 0 / 536 = 0.0% May 5 · 3 / 855 = 0.4% May 6 · 3 / 671 = 0.4% May 7 · 0 / 624 = 0.0% May 8 · 1 / 597 = 0.2% May 9 · 0 / 428 = 0.0% May 10 · 1 / 350 = 0.3% May 11 · 3 / 536 = 0.6% May 12 · 1 / 797 = 0.1% May 13 · 4 / 687 = 0.6% May 14 · 2 / 625 = 0.3% May 15 · 2 / 542 = 0.4% May 16 · 1 / 407 = 0.2% May 17 · 1 / 367 = 0.3% May 18 · 0 / 566 = 0.0% May 19 · 3 / 846 = 0.4% May 20 · 2 / 674 = 0.3% May 21 · 0 / 606 = 0.0% May 22 · 3 / 546 = 0.5% May 23 · 0 / 378 = 0.0% May 24 · 0 / 341 = 0.0% May 25 · 1 / 535 = 0.2% May 26 · 0 / 877 = 0.0% May 27 · 2 / 683 = 0.3% May 28 · 1 / 577 = 0.2% May 29 · 1 / 486 = 0.2% May 30 · 1 / 377 = 0.3% May 31 · 0 / 368 = 0.0% Jun 1 · 0 / 619 = 0.0% Jun 2 · 1 / 927 = 0.1% Jun 3 · 2 / 711 = 0.3% Jun 4 · 0 / 598 = 0.0% Jun 5 · 4 / 578 = 0.7% Jun 6 · 0 / 436 = 0.0% Jun 7 · 2 / 405 = 0.5% Jun 8 · 1 / 511 = 0.2% Jun 9 · 1 / 872 = 0.1% Jun 10 · 1 / 725 = 0.1% Jun 11 · 3 / 573 = 0.5% Jun 12 · 2 / 445 = 0.4% Jun 13 · 0 / 381 = 0.0% Jun 14 · 1 / 346 = 0.3% Jun 15 · 1 / 530 = 0.2% Jun 16 · 3 / 1047 = 0.3% Jun 17 · 1 / 899 = 0.1% Jun 18 · 0 / 672 = 0.0% Jun 19 · 1 / 544 = 0.2% Jun 20 · 0 / 443 = 0.0% Jun 21 · 1 / 384 = 0.3% Jun 22 · 3 / 574 = 0.5% Jun 23 · 1 / 899 = 0.1% Jun 24 · 1 / 739 = 0.1% Jun 25 · 1 / 619 = 0.2% Jun 26 · 0 / 533 = 0.0% Jun 27 · 0 / 433 = 0.0% Jun 28 · 0 / 385 = 0.0% Jun 29 · 2 / 503 = 0.4% Jun 30 · 0 / 803 = 0.0% Jul 1 · 1 / 799 = 0.1% Jul 2 · 1 / 604 = 0.2% Jul 3 · 2 / 498 = 0.4% Jul 4 · 1 / 411 = 0.2% Jul 5 · 0 / 367 = 0.0% Jul 6 · 0 / 552 = 0.0% Jul 7 · 2 / 929 = 0.2% Jul 8 · 0 / 752 = 0.0% Jul 9 · 1 / 688 = 0.1% Jul 10 · 1 / 564 = 0.2% Jul 11 · 1 / 448 = 0.2% Jul 12 · 1 / 397 = 0.3% Jul 13 · 1 / 552 = 0.2% Jul 14 · 0 / 885 = 0.0% Jul 15 · 0 / 738 = 0.0% Jul 16 · 0 / 820 = 0.0% Jul 17 · 2 / 658 = 0.3%
Apr 19, 2026 90 days Jul 17, 2026

How StackScope detects technologies

⋮ Jul 1, 2026: Adoption figures now count launches from launch platforms. Use the source view to include StackScope Discovery.

⋮ Jul 3, 2026: Email provider detection improved: providers identified from mail configuration are now caught on a site's first crawl. Earlier data may slightly undercount.

Transactional Email leaders

Tool % of launches % of category
#1 – Resend 19.29% 72.77%
#2 – Amazon SES 3.72% 14.02%
#3 – SendGrid 2.87% 10.83%
#4 – Mailgun 1.26% 4.75%
#5 – Firebase Trigger Email 0.99% 3.73%
…
#10 ▼2 Postmark Current page 0.20% 0.77%

Percentages show adoption among indie launches: the share of all analysed launches, and of launches using any Transactional Email tool.The most common alternatives to Postmark among indie launches are Mailgun and Firebase Trigger Email.Among June launches it ranked #12 in Transactional Email, down from #10 in May. All 66 in Transactional Email →

Often used with

Tool Launches
Google Search Console 100
HSTS 87
Tailwind CSS 76
Google Analytics 75
Cloudflare 72

Tools most often detected on the same launches as Postmark.

Highest-scoring launches using Postmark

The top launches by StackScope score among the 131 we've detected using Postmark.

Screenshot of Licentric, a launch using Postmark Licentric Jun 23, 2026 · score 10.0 United States Developer Tools Screenshot of College Decoded, a launch using Postmark College Decoded Jun 16, 2026 · score 10.0 Education Screenshot of Pixelmojo Radar, a launch using Postmark Pixelmojo Radar Jun 8, 2026 · score 10.0 Philippines AI Screenshot of AdSights Ads Framework, a launch using Postmark AdSights Ads Framework Jun 3, 2026 · score 10.0 AI Screenshot of Jynx, a launch using Postmark Jynx May 30, 2026 · score 10.0 France Games Screenshot of BizRnR, a launch using Postmark BizRnR May 6, 2026 · score 10.0 Marketing

Most recent of 131 launches using Postmark

Screenshot of OneUp Networks, a launch using Postmark OneUp Networks Jul 18, 2026 · score 7.6 Developer Tools Screenshot of AI Pet Assistant, a launch using Postmark AI Pet Assistant Jul 17, 2026 · score 5.7 United States Health Screenshot of JMJ Billings, a launch using Postmark JMJ Billings Jul 17, 2026 · score 7.0 Finance Screenshot of Motionobj, a launch using Postmark Motionobj Jul 13, 2026 · score 5.7 Productivity Screenshot of CurrencyFreaks, a launch using Postmark CurrencyFreaks Jul 12, 2026 · score 8.1 Screenshot of sinsesgo, a launch using Postmark sinsesgo Jul 11, 2026 · score 7.9 Spain Screenshot of NewIPNow, a launch using Postmark NewIPNow Jul 10, 2026 · score 7.1 United States Screenshot of Squid Proxies, a launch using Postmark Squid Proxies Jul 9, 2026 · score 8.5 United States Developer Tools Screenshot of Corate, a launch using Postmark Corate Jul 7, 2026 · score 4.8 Screenshot of FamilyStories, a launch using Postmark FamilyStories Jul 7, 2026 · score 9.5 Social Screenshot of GearCheckAuto, a launch using Postmark GearCheckAuto Jul 4, 2026 · score 5.0 Screenshot of Avi-Go, a launch using Postmark Avi-Go Jul 3, 2026 · score 9.1 China

Showing the most recent 12 of 131.

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