Sites using Email-Cluster
Get told when a new site ships with Email-Cluster.
Stackdar watches every launch we detect and sends you the ones using Email-Cluster, by email, Slack or webhook. On every plan, from £15 a month.
See how alerts workFound via: StackScope Discovery (Indie) 11 · StackScope Wider Web 116
Email-Cluster has been detected on 127 launches we've crawled, with 55 of those in September 2026 (0.0% of the month's launches so far). The 7-day rolling share is 0.0%, roughly steady week on week. Most recent detection: ChangeCapture | UK Business Change Data, yesterday.
It's most commonly paired with LiteSpeed Web Server, HTTP/3, and Google Fonts. By product type, the launches using it are most often E-commerce (36%), Health (12%), and Productivity (12%).
What kind of products ship with Email-Cluster
25 launches
Domain endings using Email-Cluster
127 sites
- .uk 68.50%
- .com 25.98%
- .online 1.57%
- .org 1.57%
- .app 0.79%
- .ie 0.79%
- .net 0.79%
Country
73 of 127 sites, where we are semi-confident of the country.
-
United Kingdom
100.00%
Share of new sites using Email-Cluster
Each dot is one launch day. Line is the 7-day rolling average. Chart starts at first detection.
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.
Email Hosting leaders
| Tool | % of launches | % of category | ||
|---|---|---|---|---|
| #1 | ▼1 |
Google Workspace
|
6.08% | 21.77% |
| #2 | ▲1 |
Hostinger Email
|
5.81% | 20.80% |
| #3 | ▲1 |
IONOS Email
|
1.84% | 6.58% |
| #4 | ▼1 |
Zoho Mail
|
1.68% | 6.00% |
| #5 | – |
Microsoft 365
|
1.00% | 3.59% |
| … | ||||
| #233 | ▼2 | Email-Cluster Current page | <0.01% | 0.01% |
Percentages show adoption among indie launches: the share of all analysed launches, and of launches using any Email Hosting tool.Among August launches it ranked #241 in Email Hosting, down from #239 in July. All 3962 in Email Hosting →
Often used with
| Tool | Sites |
|---|---|
LiteSpeed Web Server
|
124 |
| HTTP/3 | 99 |
Google Fonts
|
55 |
WordPress
|
50 |
| UK-NOC | 47 |
Tools most often detected on the same sites as Email-Cluster.
Recent launches we can show
11 of the 127 sites using Email-Cluster are product launches we list individually. The other 116 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
Rota, leave and attendance software | RotaTree
DomainsByLocation — Available UK local domains backed by Google search data
Hi, I’m Welma. A little help for the people who care.
ListingFix | Tripadvisor Listing Fix for UK Businesses
Marketing
The Crooked Signpost Mysteries — cosy tap-through whodunnits for your tablet
Voro — Never miss a service visit again
Productivity
Voro — Never miss a service visit again
Productivity
Snas – AI Email Assistant & Simple Newsletters sent by Approved Senders
Productivity
Schengen 90/180 day tracker · MyStayDays
AgentsWorklog — a shared worklog for AI coding agents
Developer Tools
The StackScope API serves all 127 sites using Email-Cluster, filterable and exportable, from £15 a month.