Business email hosting from 20i, the UK web hosting provider.
12,549 sites
12,496 found by StackScope, 53 via launch platforms
- StackScope Wider Web 11,615
- StackScope Discovery (Indie) 881
- Product Hunt 42
- Other 7
- Hacker News 2
- PeerPush 2
StackMail appeared on about 3,700 new sites in the last 30 days.
These figures cover websites that went live since April 2026, not the web as a whole.
Get told when a new site ships with StackMail.
3,672 new sites with StackMail first seen in the last 30 days.
Stackdar watches every launch we detect and sends you the ones using StackMail, by email, Slack or webhook. On every plan, from £15 a month.
See how alerts workShare of new sites using StackMail
Each dot is one launch day. Line is the 7-day rolling average; weekly averages before July 2026.
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.
The shaded parts of the chart are measured against a different set of sites.
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, so it can step at these lines without the technology itself changing. For a single continuous measure, switch to launch platforms.
What kind of products ship with StackMail
3,225 sites with a known product type, all time
Domain endings using StackMail
12,535 sites, all time
- .com 41.52%
- .uk 32.41%
- .in 9.66%
- .online 2.90%
- .org 2.63%
- .net 1.22%
- .us 1.00%
- .app 0.96%
- .co 0.94%
- .site 0.90%
- .ca 0.73%
- .store 0.73%
- .xyz 0.43%
- .ie 0.37%
- .ch 0.30%
Country
Country likely for 4,514 of 12,549 sites (36%), 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.
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United Kingdom 76.7%
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India 16.5%
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United States 1.4%
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Canada 1.0%
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Ireland 1.0%
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Switzerland 0.6%
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France 0.4%
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Indonesia 0.3%
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Germany 0.2%
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Brazil 0.2%
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Netherlands 0.2%
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Pakistan 0.2%
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Spain 0.2%
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Australia 0.2%
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Czechia 0.2%
Green hosting
53 checked sites since Apr 1, 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.
- StackMail 70%
- Average 47%
Email Hosting leaders
| Tool | % of sites, all time | % of category, all time | ||
|---|---|---|---|---|
| #1 | – |
|
5.77% | 20.09% |
| #2 | – |
|
4.81% | 16.74% |
| #3 | – |
|
2.23% | 7.74% |
| #4 | ▼1 |
|
1.93% | 6.73% |
| #5 | ▲2 |
|
1.84% | 6.41% |
| … | ||||
| #19 | ▼3 |
|
0.22% | 0.76% |
Percentages show all-time adoption across the new sites we track: the share of all of them, and of the sites using any Email Hosting tool.Among September launches it ranked #20 in Email Hosting, down from #17 in August. All 4690 in Email Hosting →
Recent launches using StackMail
934 of the 12,549 sites using StackMail are product launches we list individually. The other 11,615 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
Showing the most recent 12 of 934.
The StackScope API serves all 12,549 sites using StackMail, filterable and exportable, from £15 a month.