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EmailJS on new websites

Client-side email sending SDK. Lets sites trigger transactional email from browser JavaScript without a backend, routing through a configured email service (SendGrid, Mailgun, Gmail, etc).

#11 of 172 in Transactional Email In our data since Apr 2026 Last seen: Oct 16, 2026 Most recent launch: SIGTAD PRO | Sistema Inteligente de Gestión y Control Interno, Oct 16, 2026 Website: emailjs.com

4,400 sites

4,326 found by StackScope, 74 via launch platforms

StackScope Wider Web 3,970 StackScope Discovery (Indie) 356 Product Hunt 67 PeerPush 3 Other 3 Hacker News 1
  • StackScope Wider Web 3,970
  • StackScope Discovery (Indie) 356
  • Product Hunt 67
  • PeerPush 3
  • Other 3
  • Hacker News 1
View: All sites All launches Launch platforms StackScope Discovery StackScope Wider Web

EmailJS appeared on about 850 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 EmailJS.

854 new sites with EmailJS first seen in the last 30 days.

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

See how alerts work

Share of new sites using EmailJS

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

0.0%
last 7 days
+0.0pp vs prior week
0.0%
30 days to Oct 15
-0.0pp vs 30 days before
4,400
sites all time
since Apr 2026
EmailJS 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 · 24 / 24723 = 0.1% Jul 19 · 37 / 27645 = 0.1% Jul 20 · 27 / 23868 = 0.1% Jul 21 · 29 / 22945 = 0.1% Jul 22 · 35 / 24372 = 0.1% Jul 23 · 13 / 18101 = 0.1% Jul 24 · 18 / 13980 = 0.1% Jul 25 · 5 / 9550 = 0.1% Jul 26 · 15 / 21752 = 0.1% Jul 27 · 46 / 37234 = 0.1% Jul 28 · 46 / 41886 = 0.1% Jul 29 · 48 / 53564 = 0.1% Jul 30 · 46 / 48258 = 0.1% Jul 31 · 68 / 56048 = 0.1% Aug 1 · 79 / 54890 = 0.1% Aug 2 · 66 / 53852 = 0.1% Aug 3 · 60 / 52615 = 0.1% Aug 4 · 66 / 40704 = 0.2% Aug 5 · 43 / 35348 = 0.1% Aug 6 · 45 / 39149 = 0.1% Aug 7 · 39 / 40250 = 0.1% Aug 8 · 46 / 42805 = 0.1% Aug 9 · 48 / 37777 = 0.1% Aug 10 · 29 / 32324 = 0.1% Aug 11 · 35 / 34557 = 0.1% Aug 12 · 38 / 37135 = 0.1% Aug 13 · 46 / 55469 = 0.1% Aug 14 · 48 / 56755 = 0.1% Aug 15 · 49 / 55907 = 0.1% Aug 16 · 65 / 56270 = 0.1% Aug 17 · 45 / 45809 = 0.1% Aug 18 · 43 / 56662 = 0.1% Aug 19 · 48 / 51684 = 0.1% Aug 20 · 61 / 68977 = 0.1% Aug 21 · 102 / 93849 = 0.1% Aug 22 · 78 / 94192 = 0.1% Aug 23 · 86 / 93593 = 0.1% Aug 24 · 96 / 81709 = 0.1% Aug 25 · 65 / 71532 = 0.1% Aug 26 · 64 / 66856 = 0.1% Aug 27 · 76 / 87835 = 0.1% Aug 28 · 93 / 87905 = 0.1% Aug 29 · 75 / 88063 = 0.1% Aug 30 · 84 / 100668 = 0.1% Aug 31 · 115 / 100238 = 0.1% Sep 1 · 86 / 103415 = 0.1% Sep 2 · 86 / 108914 = 0.1% Sep 3 · 87 / 103276 = 0.1% Sep 4 · 79 / 98533 = 0.1% Sep 5 · 68 / 102853 = 0.1% Sep 6 · 73 / 89272 = 0.1% Sep 7 · 66 / 86119 = 0.1% Sep 8 · 46 / 77965 = 0.1% Sep 9 · 32 / 75515 = 0.0% Sep 10 · 43 / 83653 = 0.1% Sep 11 · 48 / 85552 = 0.1% Sep 12 · 27 / 56764 = 0.0% Sep 13 · 38 / 57989 = 0.1% Sep 14 · 31 / 59224 = 0.1% Sep 15 · 15 / 58180 = 0.0% Sep 16 · 31 / 58965 = 0.1% Sep 17 · 22 / 56747 = 0.0% Sep 18 · 38 / 53080 = 0.1% Sep 19 · 26 / 45270 = 0.1% Sep 20 · 14 / 44755 = 0.0% Sep 21 · 19 / 51661 = 0.0% Sep 22 · 22 / 55402 = 0.0% Sep 23 · 23 / 58308 = 0.0% Sep 24 · 19 / 53459 = 0.0% Sep 25 · 21 / 50759 = 0.0% Sep 26 · 114 / 101516 = 0.1% Sep 27 · 24 / 52131 = 0.0% Sep 28 · 27 / 61107 = 0.0% Sep 29 · 31 / 77850 = 0.0% Sep 30 · 25 / 69709 = 0.0% Oct 1 · 29 / 69222 = 0.0% Oct 2 · 24 / 64730 = 0.0% Oct 3 · 31 / 53733 = 0.1% Oct 4 · 21 / 52052 = 0.0% Oct 5 · 23 / 63687 = 0.0% Oct 6 · 19 / 67585 = 0.0% Oct 7 · 25 / 67656 = 0.0% Oct 8 · 17 / 69310 = 0.0% Oct 9 · 14 / 70361 = 0.0% Oct 10 · 21 / 60636 = 0.0% Oct 11 · 34 / 65593 = 0.1% Oct 12 · 33 / 66628 = 0.0% Oct 13 · 23 / 70942 = 0.0% Oct 14 · 27 / 70655 = 0.0% Oct 15 · 57 / 93489 = 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 EmailJS 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 EmailJS

1,344 sites with a known type, all time

Developer Tools
16.2%
E-commerce
15.9%
Health
12.7%
Education
11.8%
Finance
9.5%
Marketing
8.0%
Productivity
5.2%
Design
4.8%
Content
3.4%
AI
3.4%
Hiring & HR
2.8%
Social
2.2%
Games
2.1%
Crypto
1.7%
Directory
0.5%

Domain endings using EmailJS

4,396 sites, all time

  • .com 50.2%
  • .in 10.5%
  • .online 5.2%
  • .fr 3.8%
  • .dev 3.2%
  • .site 3.1%
  • .org 2.6%
  • .me 2.5%
  • .ca 2.1%
  • .app 2.0%
  • .uk 1.9%
  • .tech 1.8%
  • .store 1.5%
  • .net 1.4%
  • .co 1.2%

Country

Country likely for 823 of 4,400 sites (18.7%), 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.

  • India India 35.7%
  • France France 19.9%
  • United Kingdom United Kingdom 8.0%
  • United States United States 6.4%
  • Canada Canada 5.1%
  • Australia Australia 2.1%
  • Switzerland Switzerland 1.6%
  • South Korea South Korea 1.3%
  • Spain Spain 1.2%
  • New Zealand New Zealand 1.2%
  • Türkiye Türkiye 1.2%
  • Germany Germany 1.1%
  • Sweden Sweden 1.0%
  • Slovakia Slovakia 1.0%
  • Brazil Brazil 0.9%

Green hosting

74 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.

  • EmailJS 26%
  • Average 47%

Transactional Email leaders

Tool % of sitesall time % of categoryall time
#1 – Resend 4.2% 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%
…
#11 ▼1 EmailJS Current page 0.1% 1.0%

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 EmailJS on new websites are SendGrid and Amazon SES. All 172 in Transactional Email →

Often used with

Tool Sites vs all new sites
jsDelivr 3,791 19x
cdnjs 1,129 5.8x
Netlify 1,063 5.1x
Font Awesome 899 3.1x

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

Recent launches using EmailJS

430 of the 4,400 sites using EmailJS are product launches we list individually. The other 3,970 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

SIGTAD PRO | Sistema Inteligente de Gestión y Control Interno Oct 16, 2026 Also detected GitHub Pages cdnjs Fastly jsDelivr Screenshot of GiNi Labor Management, a launch using EmailJS GiNi Labor Management Oct 16, 2026 · score 8.6 Also detected Nuxt Vue.js Atlassian cdnjs Screenshot of GiNi Voice Picking, a launch using EmailJS GiNi Voice Picking Oct 16, 2026 · score 8.6 Also detected Nuxt Vue.js Atlassian cdnjs TrendsConnector | Ask your AI what is trending Oct 15, 2026 Also detected jQuery Anthropic Calendly Cloudflare NK Rail – Électronique pour trains miniatures Oct 15, 2026 Also detected Netlify jsDelivr OVH DNS OVH Email Dukkami: an ecommerce solution for shops in Lebanon Oct 14, 2026 · E-commerce Also detected Next.js React Cloudflare Lucide Icons The Club Studio Oct 14, 2026 Also detected Netlify Google Fonts jsDelivr NS1 Screenshot of Aurexis, a launch using EmailJS Aurexis Oct 14, 2026 · score 7.5 · United States Finance Also detected Capacitor React Vercel Apple Sign In 真皮表带定制系统 — B2B Configurator Oct 14, 2026 · Productivity Also detected cdnjs DNSPod Google Fonts jsDelivr Booker Planner - Gestion & Staffing d'Équipes Événementielles Oct 13, 2026 · Hiring & HR Also detected cdnjs Fastly Firebase Google Fonts BookGenie | AI Activity Book Creator for Printable Worksheets and Puzzle Books Oct 13, 2026 · Education Also detected React Bing Ads DeepSeek Discord Huntabout — Games that bring your team together Oct 13, 2026 · Games Also detected Netlify Google Fonts jsDelivr one.com

Showing the most recent 12 of 430.

The StackScope API serves all 4,400 sites using EmailJS, filterable and exportable, from £15 a month.

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