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Sites using Firebase Trigger Email

Firebase extension that sends transactional email by writing documents to a Firestore collection.

#9 of 150 in Transactional Email Tracked since Apr 2026 Last seen: Sep 4, 2026 Website: firebase.google.com
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3,183 sites

2,272 found by StackScope, 911 via launch platforms

StackScope Discovery (Indie) 1,451 StackScope Wider Web 821 Product Hunt 729 PeerPush 109 Hacker News 43 Other 30
  • StackScope Discovery (Indie) 1,451
  • StackScope Wider Web 821
  • Product Hunt 729
  • PeerPush 109
  • Hacker News 43
  • Other 30
View: All sites All launches Launch platforms StackScope Discovery StackScope Wider Web
Last 7 days 0.1% -0.0pp
Most used with Firebase, HSTS, HTTP/3
Top product types Productivity, Health, Education
Green hosting 62% vs 45% avg

Firebase Trigger Email has been detected on 3,183 launches we've crawled, with 168 of those in September 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: Gym Planner — Structured Programs, Calculated Weights, today.

It's most commonly paired with Firebase, HSTS, and HTTP/3. By product type, the launches using it are most often Productivity (15%), Health (13%), and Education (11%). By estimated origin, the United States leads (43%), ahead of India (11%). By domain ending, launches using it are 1.8 times as likely as the average launch to live on a .store domain. The 906 scored launches using Firebase Trigger Email average a StackScope score of 7.1 out of 10, against 6.4 across all launches we score.

What kind of products ship with Firebase Trigger Email

1,736 launches

Productivity
15.38%
Health
12.96%
Education
10.89%
Finance
10.48%
Social
8.93%
Marketing
8.41%
AI
6.80%
Developer Tools
4.78%
E-commerce
4.72%
Content
4.67%
Games
4.55%
Hiring & HR
4.21%
Design
1.61%
Crypto
0.98%
Directory
0.63%

Domain endings using Firebase Trigger Email

3,179 sites

  • .com 41.49%
  • .app 21.58%
  • .ai 6.26%
  • .in 4.06%
  • .io 3.62%
  • .online 3.33%
  • .co 1.86%
  • .net 1.86%
  • .me 1.48%
  • .xyz 1.42%
  • .dev 1.35%
  • .org 1.32%
  • .site 1.16%
  • .store 0.85%
  • .space 0.79%

Country

258 of 3,183 sites, where we are confident of the country.

  • United States United States 42.64%
  • India India 10.85%
  • United Kingdom United Kingdom 10.47%
  • Australia Australia 4.26%
  • Canada Canada 3.10%
  • Germany Germany 1.94%
  • France France 1.94%
  • Türkiye Türkiye 1.94%
  • Italy Italy 1.55%
  • United Arab Emirates United Arab Emirates 1.16%
  • Brazil Brazil 1.16%
  • Switzerland Switzerland 1.16%
  • Spain Spain 1.16%
  • Austria Austria 0.78%
  • Ireland Ireland 0.78%

Share of new sites using Firebase Trigger Email

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

0.1%
last 7 days
-0.0pp vs prior week
0.1%
September so far
168 of 278,365 sites
3,183
sites all time
since Apr 2026
Firebase Trigger Email 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. 5% 2% 0% Apr May Jun Jul Aug Sep 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. Weekly averages before this point, daily after. Jun 6 · 4 / 436 = 0.9% Jun 7 · 5 / 404 = 1.2% Jun 8 · 6 / 515 = 1.2% Jun 9 · 7 / 876 = 0.8% Jun 10 · 8 / 722 = 1.1% Jun 11 · 4 / 577 = 0.7% Jun 12 · 9 / 449 = 2.0% Jun 13 · 5 / 380 = 1.3% Jun 14 · 0 / 345 = 0.0% Jun 15 · 6 / 532 = 1.1% Jun 16 · 7 / 1052 = 0.7% Jun 17 · 9 / 907 = 1.0% Jun 18 · 3 / 674 = 0.4% Jun 19 · 7 / 547 = 1.3% Jun 20 · 4 / 443 = 0.9% Jun 21 · 4 / 383 = 1.0% Jun 22 · 6 / 576 = 1.0% Jun 23 · 9 / 900 = 1.0% Jun 24 · 5 / 737 = 0.7% Jun 25 · 5 / 618 = 0.8% Jun 26 · 7 / 534 = 1.3% Jun 27 · 4 / 431 = 0.9% Jun 28 · 7 / 383 = 1.8% Jun 29 · 5 / 503 = 1.0% Jun 30 · 9 / 801 = 1.1% Jul 1 · 9 / 795 = 1.1% Jul 2 · 3 / 604 = 0.5% Jul 3 · 1 / 499 = 0.2% Jul 4 · 5 / 411 = 1.2% Jul 5 · 1 / 367 = 0.3% Jul 6 · 5 / 551 = 0.9% Jul 7 · 8 / 1172 = 0.7% Jul 8 · 29 / 12591 = 0.2% Jul 9 · 71 / 23751 = 0.3% Jul 10 · 46 / 22553 = 0.2% Jul 11 · 34 / 15986 = 0.2% Jul 12 · 23 / 20293 = 0.1% Jul 13 · 27 / 20930 = 0.1% Jul 14 · 35 / 20417 = 0.2% Jul 15 · 20 / 17247 = 0.1% Jul 16 · 21 / 14268 = 0.1% Jul 17 · 38 / 19731 = 0.2% Jul 18 · 28 / 22707 = 0.1% Jul 19 · 27 / 26089 = 0.1% Jul 20 · 32 / 22591 = 0.1% Jul 21 · 42 / 21662 = 0.2% Jul 22 · 45 / 23209 = 0.2% Jul 23 · 34 / 16875 = 0.2% Jul 24 · 33 / 12859 = 0.3% Jul 25 · 20 / 8950 = 0.2% Jul 26 · 36 / 19988 = 0.2% Jul 27 · 69 / 33888 = 0.2% Jul 28 · 53 / 38232 = 0.1% Jul 29 · 66 / 50128 = 0.1% Jul 30 · 46 / 43972 = 0.1% Jul 31 · 52 / 51145 = 0.1% Aug 1 · 41 / 50533 = 0.1% Aug 2 · 54 / 49754 = 0.1% Aug 3 · 52 / 48271 = 0.1% Aug 4 · 52 / 37361 = 0.1% Aug 5 · 37 / 32720 = 0.1% Aug 6 · 36 / 36608 = 0.1% Aug 7 · 37 / 37907 = 0.1% Aug 8 · 48 / 39701 = 0.1% Aug 9 · 33 / 34234 = 0.1% Aug 10 · 37 / 28887 = 0.1% Aug 11 · 45 / 32046 = 0.1% Aug 12 · 40 / 33512 = 0.1% Aug 13 · 43 / 49979 = 0.1% Aug 14 · 61 / 51457 = 0.1% Aug 15 · 41 / 51544 = 0.1% Aug 16 · 51 / 51868 = 0.1% Aug 17 · 28 / 41475 = 0.1% Aug 18 · 49 / 53971 = 0.1% Aug 19 · 44 / 49562 = 0.1% Aug 20 · 55 / 66963 = 0.1% Aug 21 · 72 / 90472 = 0.1% Aug 22 · 65 / 91570 = 0.1% Aug 23 · 60 / 90302 = 0.1% Aug 24 · 49 / 78982 = 0.1% Aug 25 · 50 / 69441 = 0.1% Aug 26 · 50 / 65228 = 0.1% Aug 27 · 60 / 83513 = 0.1% Aug 28 · 45 / 83452 = 0.1% Aug 29 · 69 / 84372 = 0.1% Aug 30 · 51 / 92684 = 0.1% Aug 31 · 49 / 90202 = 0.1% Sep 1 · 47 / 91290 = 0.1% Sep 2 · 62 / 96641 = 0.1% Sep 3 · 59 / 90434 = 0.1%
Mar 30, 2026 90 days Sep 3, 2026

The shaded part of the chart is measured against a different set of sites. Until 8 July 2026 we only tracked launches from launch platforms; from that date we crawl the wider web as well. The share is a proportion of whatever we were tracking at the time, so it can step at that line without the technology itself changing. For a single continuous measure, switch to launch platforms.

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 5.39% 62.92%
#2 ▲1 SendGrid 0.67% 7.76%
#3 ▼2 Amazon SES 0.64% 7.45%
#4 ▲1 MailChannels 0.52% 6.09%
#5 – Mail.Baby 0.45% 5.22%
…
#9 ▼2 Firebase Trigger Email Current page 0.12% 1.36%

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 Firebase Trigger Email among indie launches are SendGrid and Amazon SES.Among August launches it ranked #10 in Transactional Email, down from #8 in July. All 150 in Transactional Email →

Often used with

Tool Sites
Firebase 3,181
HSTS 2,221
HTTP/3 1,849
Google Search Console 1,731
Tailwind CSS 1,420

Tools most often detected on the same sites as Firebase Trigger Email.

Recent launches we can show

2,362 of the 3,183 sites using Firebase Trigger Email are product launches we list individually. The other 821 are sites we found crawling the wider web: they count towards the figures above, but we do not publish them one by one. How StackScope Discovery works

Gym Planner — Structured Programs, Calculated Weights Sep 4, 2026 Health Bridge — Reflect Together Sep 4, 2026 Social MotosGTE — Motos usadas en Costa Rica Sep 4, 2026 Remixly | Coming soon — website to short-form remixes Sep 3, 2026 Content Venture AI Uganda | Know Where to Invest in Uganda Sep 3, 2026 AI Bora Feirar — Faça o mesmo dinheiro render mais Sep 3, 2026 NotaSpese — Nota spese semplice, chilometri, scontrini ed export Sep 3, 2026 Productivity Dish AI — Snap a dish. Get the recipe. Sep 3, 2026 Omnivo – Smart Lists for Every Occasion Sep 3, 2026 Productivity KUNDA - Short-stay homes in The Gambia Sep 3, 2026 QCycle | All in one cycling app Sep 3, 2026 Health Dandora | Cook Up Content, Secure the Bag Sep 3, 2026 Content

Showing the most recent 12 of 2,362.

The StackScope API serves all 3,183 sites using Firebase Trigger Email, filterable and exportable, from £15 a month.

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