Sites using Web4U Email 
Mail hosting from Web4U, a Czech web hosting and domain provider.
Found via: StackScope Discovery (Indie) 1 · StackScope Wider Web 2
Web4U Email has been detected on 3 launches since first appearing in August 2026. Most recent detection: Kite Agent — your models and your agent, on your phone, yesterday.
It's most commonly paired with MailChannels, Web4U, and Mailgun.
Share of new sites using Web4U Email
Each dot is one launch day. Line is the 7-day rolling average. Chart starts at first detection.
Email Hosting leaders
| Tool | % of launches | % of category | ||
|---|---|---|---|---|
| #1 | ▼1 |
Google Workspace
|
6.57% | 22.93% |
| #2 | ▲1 |
Hostinger Email
|
6.45% | 22.50% |
| #3 | ▼1 |
Zoho Mail
|
1.85% | 6.46% |
| #4 | ▲1 |
IONOS Email
|
1.74% | 6.06% |
| #5 | – |
Microsoft 365
|
1.05% | 3.68% |
| … | ||||
| #1366 |
Web4U Email
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. All 3219 in Email Hosting →
Often used with
| Tool | Sites |
|---|---|
MailChannels
|
3 |
| Web4U | 3 |
Mailgun
|
1 |
GitHub Pages
|
1 |
nginx
|
1 |
Tools most often detected on the same sites as Web4U Email.
Recent launches we can show
1 of the 3 sites using Web4U Email are product launches we list individually. The other 2 are sites we found crawling the wider web: they count towards the figures above, but we do not publish them one by one.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
The StackScope API serves all 3 sites using Web4U Email, filterable and exportable, from £15 a month.