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Mailgun on new websites

Mailgun transactional email API.

#7 of 172 in Transactional Email In our data since Apr 2026 Last seen: Oct 16, 2026 Most recent launch: 8TXE | Multi-Currency Accounts, FX, Cards, and Payment Workflows, Oct 16, 2026 Website: mailgun.com

13,387 sites

12,022 found by StackScope, 1,365 via launch platforms

StackScope Wider Web 9,689 StackScope Discovery (Indie) 2,333 Product Hunt 1,069 PeerPush 135 Hacker News 99 Other 62
  • StackScope Wider Web 9,689
  • StackScope Discovery (Indie) 2,333
  • Product Hunt 1,069
  • PeerPush 135
  • Hacker News 99
  • Other 62
View: All sites All launches Launch platforms StackScope Discovery StackScope Wider Web

Mailgun appeared on about 2,400 new sites in the last 30 days.

These figures cover websites that went live since April 2026, not the web as a whole.

Stackdar alerts

Get told when a new site ships with Mailgun.

2,430 new sites with Mailgun first seen in the last 30 days.

Stackdar watches every launch we detect and sends you the ones using Mailgun, by email, Slack or webhook. On every plan, from £15 a month.

See how alerts work

Share of new sites using Mailgun

Each dot is one launch day. Line is the 7-day rolling average; weekly averages before July 2026.

0.1%
last 7 days
-0.0pp vs prior week
0.1%
30 days to Oct 15
-0.1pp vs 30 days before
13,387
sites all time
since Apr 2026
Mailgun daily detection trend Before 8 July 2026: launch platforms only. We began crawling the wider web on this date, so the cohort this share is measured against changes here. 10 September 2026: we improved our infrastructure to index new sites much sooner, often on the day they go live, so the cohort this share is measured against changes here. 5% 2% 0% Apr May Jun Jul Aug Sep Oct Weekly averages before this point, daily after. Jul 18 · 45 / 24666 = 0.2% Jul 19 · 57 / 27627 = 0.2% Jul 20 · 46 / 23838 = 0.2% Jul 21 · 63 / 22943 = 0.3% Jul 22 · 71 / 24371 = 0.3% Jul 23 · 54 / 18098 = 0.3% Jul 24 · 34 / 13979 = 0.2% Jul 25 · 29 / 9550 = 0.3% Jul 26 · 58 / 21750 = 0.3% Jul 27 · 127 / 37229 = 0.3% Jul 28 · 192 / 41884 = 0.5% Jul 29 · 207 / 53558 = 0.4% Jul 30 · 162 / 48254 = 0.3% Jul 31 · 172 / 56048 = 0.3% Aug 1 · 176 / 54885 = 0.3% Aug 2 · 175 / 53850 = 0.3% Aug 3 · 171 / 52614 = 0.3% Aug 4 · 157 / 40704 = 0.4% Aug 5 · 105 / 35346 = 0.3% Aug 6 · 142 / 39149 = 0.4% Aug 7 · 149 / 40250 = 0.4% Aug 8 · 137 / 42805 = 0.3% Aug 9 · 125 / 37777 = 0.3% Aug 10 · 82 / 32323 = 0.3% Aug 11 · 87 / 34557 = 0.3% Aug 12 · 133 / 37135 = 0.4% Aug 13 · 172 / 55468 = 0.3% Aug 14 · 149 / 56751 = 0.3% Aug 15 · 165 / 55907 = 0.3% Aug 16 · 155 / 56269 = 0.3% Aug 17 · 144 / 45595 = 0.3% Aug 18 · 172 / 56595 = 0.3% Aug 19 · 184 / 51671 = 0.4% Aug 20 · 172 / 68960 = 0.2% Aug 21 · 293 / 93840 = 0.3% Aug 22 · 264 / 94185 = 0.3% Aug 23 · 273 / 93591 = 0.3% Aug 24 · 215 / 81706 = 0.3% Aug 25 · 203 / 71527 = 0.3% Aug 26 · 168 / 66852 = 0.3% Aug 27 · 283 / 87827 = 0.3% Aug 28 · 287 / 87905 = 0.3% Aug 29 · 317 / 88061 = 0.4% Aug 30 · 265 / 100665 = 0.3% Aug 31 · 238 / 100235 = 0.2% Sep 1 · 263 / 103412 = 0.3% Sep 2 · 233 / 108912 = 0.2% Sep 3 · 231 / 103274 = 0.2% Sep 4 · 233 / 98526 = 0.2% Sep 5 · 266 / 102852 = 0.3% Sep 6 · 195 / 89271 = 0.2% Sep 7 · 167 / 86119 = 0.2% Sep 8 · 141 / 77962 = 0.2% Sep 9 · 159 / 75510 = 0.2% Sep 10 · 169 / 83642 = 0.2% Sep 11 · 157 / 85544 = 0.2% Sep 12 · 117 / 56761 = 0.2% Sep 13 · 75 / 57986 = 0.1% Sep 14 · 75 / 59224 = 0.1% Sep 15 · 80 / 58180 = 0.1% Sep 16 · 85 / 58930 = 0.1% Sep 17 · 61 / 56739 = 0.1% Sep 18 · 71 / 53078 = 0.1% Sep 19 · 56 / 45268 = 0.1% Sep 20 · 49 / 44752 = 0.1% Sep 21 · 56 / 51658 = 0.1% Sep 22 · 81 / 55400 = 0.1% Sep 23 · 96 / 58300 = 0.2% Sep 24 · 66 / 53451 = 0.1% Sep 25 · 78 / 50754 = 0.2% Sep 26 · 135 / 101513 = 0.1% Sep 27 · 69 / 52128 = 0.1% Sep 28 · 108 / 61104 = 0.2% Sep 29 · 114 / 77846 = 0.1% Sep 30 · 84 / 69707 = 0.1% Oct 1 · 111 / 69218 = 0.2% Oct 2 · 80 / 64694 = 0.1% Oct 3 · 59 / 53728 = 0.1% Oct 4 · 47 / 52043 = 0.1% Oct 5 · 59 / 63685 = 0.1% Oct 6 · 83 / 67577 = 0.1% Oct 7 · 111 / 67646 = 0.2% Oct 8 · 87 / 69298 = 0.1% Oct 9 · 86 / 70309 = 0.1% Oct 10 · 99 / 60628 = 0.2% Oct 11 · 59 / 65587 = 0.1% Oct 12 · 53 / 66614 = 0.1% Oct 13 · 91 / 70879 = 0.1% Oct 14 · 78 / 70626 = 0.1% Oct 15 · 118 / 93311 = 0.1%
Mar 30, 2026 90 days Oct 15, 2026

The shaded areas were measured against a different set of sites, so the line can step there without Mailgun itself changing.

Coverage details

Before the dashed line where the dots begin, the line is a weekly average. After it, the last 90 days are shown one day at a time.

Grey: before 8 July 2026, we only tracked launches from launch platforms. From that date we crawl the wider web as well.

Amber: 8 July to 10 September 2026, before we improved our infrastructure to index new sites much sooner, often on the day they go live. Sites found that early often haven't finished setting up, so anything usually added after launch reads lower from 10 September. We record each site as it was when we found it.

The share is a proportion of whatever we were tracking at the time. For a single continuous measure, switch to launch platforms.

How StackScope detects technologies

What kind of sites use Mailgun

5,200 sites with a known type, all time

Health
16.3%
E-commerce
13.1%
Marketing
11.1%
Finance
9.3%
Productivity
9.0%
Developer Tools
7.8%
AI
7.0%
Education
5.7%
Content
5.4%
Social
4.4%
Games
4.0%
Design
2.5%
Hiring & HR
2.4%
Directory
1.2%
Crypto
1.0%

Domain endings using Mailgun

13,380 sites, all time

  • .com 62.7%
  • .org 4.4%
  • .app 3.8%
  • .uk 3.2%
  • .ai 2.9%
  • .online 2.6%
  • .net 2.2%
  • .ca 2.2%
  • .io 2.2%
  • .co 1.8%
  • .ch 1.1%
  • .fr 1.0%
  • .dev 1.0%
  • .store 0.8%
  • .us 0.8%

Country

Country likely for 1,944 of 13,387 sites (14.5%), all time.

How we know

Country comes from what each site says about itself, such as a company registration, legal terms or a phone number, not just its domain ending. Too few sites state their country plainly for the usual count, so this one also counts single signals: a country domain ending, a phone number (for North America, its area code), a location the site declares in its own page metadata, or a country-specific vendor stack and the page language where they agree and nothing contradicts them. Read these as likely rather than certain.

  • United States United States 30.7%
  • United Kingdom United Kingdom 21.4%
  • Canada Canada 8.9%
  • France France 7.3%
  • Switzerland Switzerland 5.1%
  • India India 3.6%
  • Australia Australia 3.3%
  • Germany Germany 2.2%
  • Sweden Sweden 1.9%
  • Italy Italy 1.9%
  • Brazil Brazil 1.0%
  • Netherlands Netherlands 0.9%
  • New Zealand New Zealand 0.8%
  • Spain Spain 0.8%
  • Jamaica Jamaica 0.7%

Green hosting

1,365 checked sites since Apr 2026.

What this means

The share whose web host The Green Web Foundation lists as running on green energy, against the average for every new site we checked.

  • Mailgun 54%
  • Average 47%

Transactional Email leaders

Tool % of sitesall time % of categoryall time
#1 – Resend 4.3% 58.6%
#2 ▼1 SendGrid 0.5% 7.2%
#3 ▼2 Amazon SES 0.5% 7.0%
#4 ▲2 MailChannels 0.5% 6.8%
#5 ▲1 Mail.Baby 0.4% 5.5%
…
#7 ▼3 Mailgun Current page 0.2% 3.2%

Percentages show all-time adoption across the new sites we track: the share of all of them, and of the sites using any Transactional Email tool.The most common alternatives to Mailgun on new websites are Amazon SES and MailChannels.Among September launches it ranked #9 in Transactional Email, down from #6 in August. All 172 in Transactional Email →

Often used with

Tool Sites vs all new sites
Squarespace DNS 3,768 12x

Tools that turn up far more often on Mailgun sites than on new sites in general, and how many times as common each one is there.

Recent launches using Mailgun

3,698 of the 13,387 sites using Mailgun are product launches we list individually. The other 9,689 are sites we found crawling the wider web: they count towards the figures above, but we do not publish them one by one. They are included in the StackScope API and in Stackdar alerts. How StackScope Discovery works

8TXE | Multi-Currency Accounts, FX, Cards, and Payment Workflows Oct 16, 2026 · Finance Also detected Next.js React Cloudflare Google Maps Couch Club Trivia — Good company. Great questions. | Trivia for Roku & Apple TV Oct 16, 2026 · Games Also detected Fastly Squarespace DNS Guria: IA que atende, agenda e cobra no WhatsApp Oct 16, 2026 · Marketing Also detected Next.js React Azure Blob Storage Azure Storage Prototilt | Turn your AI-built prototype into launch-ready. Oct 16, 2026 Also detected React Audos Caddy Cloudflare Magically Linked — Build stronger LinkedIn relationships Oct 16, 2026 · Marketing Also detected Cloudflare Vite Screenshot of Inscura, a launch using Mailgun Inscura Oct 16, 2026 · score 7.2 · United Kingdom Productivity Also detected Alpine.js Cloudflare PHP Tailwind CSS Screenshot of 10Everyday, a launch using Mailgun 10Everyday Oct 16, 2026 · score 4.1 · Content Also detected GitHub Pages Alldle Cloudflare Web Analytics Fastly Screenshot of Fish Audio Drama 3, a launch using Mailgun Fish Audio Drama 3 Oct 16, 2026 · score 9.5 · AI Also detected React Vercel Amplitude Apple App Store Screenshot of Hintly for Google Meet™, a launch using Mailgun Hintly for Google Meet™ Oct 16, 2026 · score 5.0 · United Kingdom Also detected GitHub Pages Fastly Squarespace DNS Guardian Expense — Expense reports, approved before lunch. Oct 16, 2026 · Finance Also detected React Vercel Cloudflare DNS Firebase the agents-only ranking arena Oct 16, 2026 · Marketing Also detected Next.js React Caddy Cloudflare RaceForm — Race research workspace Oct 16, 2026 Also detected Astro Caddy Google reCAPTCHA IONOS DNS

Showing the most recent 12 of 3,698.

The StackScope API serves all 13,387 sites using Mailgun, filterable and exportable, from £15 a month.

Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.