Sites using MSG25
Transactional email sending infrastructure with automated IP warming and routing.
Get told when a new site ships with MSG25.
Stackdar watches every launch we detect and sends you the ones using MSG25, by email, Slack or webhook. On every plan, from £15 a month.
See how alerts work200 sites
184 found by StackScope, 16 via launch platforms
- StackScope Wider Web 114
- StackScope Discovery (Indie) 70
- Product Hunt 13
- Other 2
- PeerPush 1
MSG25 has been detected on 200 launches we've crawled. The 7-day rolling share is 0.0%, roughly steady week on week. Most recent detection: Rhetoric Audit, yesterday.
It's most commonly paired with Mailbux, HSTS, and Tailwind CSS. By product type, the launches using it are most often Developer Tools (18%), AI (11%), and E-commerce (11%). The 16 scored launches using MSG25 average a StackScope score of 7.0 out of 10, against 6.4 across all launches we score.
What kind of products ship with MSG25
97 launches
Domain endings using MSG25
200 sites
- .com 54.00%
- .in 7.00%
- .app 6.50%
- .uk 6.00%
- .tech 5.00%
- .dev 2.50%
- .io 2.50%
- .me 2.00%
- .co 1.50%
- .net 1.50%
- .online 1.50%
- .agency 1.00%
- .ai 1.00%
- .ca 1.00%
Country
31 of 200 sites, where we are semi-confident of the country.
-
United Kingdom
32.26%
-
India
32.26%
-
China
9.68%
-
Canada
6.45%
-
United States
6.45%
-
France
3.23%
-
Nigeria
3.23%
-
Türkiye
3.23%
-
Uzbekistan
3.23%
Share of new sites using MSG25
Each dot is one launch day. Line is the 7-day rolling average; weekly averages before July 2026. Chart starts at first detection.
The shaded parts of the chart are measured against a different set of sites.
Grey: until 8 July 2026 we only tracked launches from launch platforms. From that date we crawl the wider web as well.
Amber: on 10 September 2026 we improved our infrastructure so we can 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 that date. We record each site as it was when we found it.
The share is a proportion of whatever we were tracking at the time, so it can step at these lines without the technology itself changing. For a single continuous measure, switch to launch platforms.
Transactional Email leaders
| Tool | % of launches | % of category | ||
|---|---|---|---|---|
| #1 | – |
Resend
|
4.49% | 59.32% |
| #2 | – |
SendGrid
|
0.60% | 7.89% |
| #3 | ▼2 |
Amazon SES
|
0.53% | 7.04% |
| #4 | – |
MailChannels
|
0.51% | 6.69% |
| #5 | – |
Mail.Baby
|
0.43% | 5.72% |
| … | ||||
| #27 | ▲1 |
MSG25
Current page
|
<0.01% | 0.06% |
Percentages show adoption among indie launches: the share of all analysed launches, and of launches using any Transactional Email tool. All 164 in Transactional Email →
Often used with
| Tool | Sites |
|---|---|
Mailbux
|
186 |
| HSTS | 114 |
Tailwind CSS
|
94 |
Cloudflare DNS
|
90 |
Cloudflare
|
88 |
Tools most often detected on the same sites as MSG25.
Recent launches we can show
86 of the 200 sites using MSG25 are product launches we list individually. The other 114 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
Rhetoric Audit
Content
Anzen Compliance — AI-Powered Rental Compliance for NZ & Australia
Revelrex | Medical Billing, Coding, Credentialing, PCMH and RCM Training Nationwide
Health
SOVEREIGN AI — Your AI. Your Truth. Your Data. Forever.
AI
ProcBoss Status Pages — one dashboard, one honest page
Developer Tools
Engineering solutions for CFD brokers
Golf Buds — find your fourth
Collabistan | Connect. Collaborate. Grow.
تحويل الدارجة الجزائرية إلى كلام
Developer Tools
Omnis — Free All-in-One Discord Bot | Moderation, Leveling, Economy & More
Social
Mobile Mechanic Shop Manager | Curbwrench
Fluantu: AI documentation localization with project context
Developer Tools
Showing the most recent 12 of 86.
The StackScope API serves all 200 sites using MSG25, filterable and exportable, from £15 a month.