Sites using CAL.pl Email 
Mail hosting from CAL.pl, a Polish hosting and domain provider.
Found via: StackScope Discovery (Indie) 2 · StackScope Wider Web 5
CAL.pl Email has been detected on 7 launches since first appearing in July 2026. Most recent detection: staklo.app - Darmowa wirtualna wizytówka, strona-wizytówka i link in bio, yesterday.
Share of new sites using CAL.pl 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 |
PrivateEmail
|
6.83% | 19.80% |
| #2 | ▼1 |
Google Workspace
|
6.81% | 19.76% |
| #3 | – |
Hostinger Email
|
6.29% | 18.24% |
| #4 | – |
Zoho Mail
|
1.99% | 5.76% |
| #5 | ▲2 |
IONOS Email
|
1.89% | 5.49% |
| … | ||||
| #682 |
CAL.pl 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 2690 in Email Hosting →
Recent launches we can show
2 of the 7 sites using CAL.pl Email are product launches we list individually. The other 5 are sites we found crawling the wider web: they count towards the figures above, but we do not publish them one by one.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
MultiPhoneCam — turn your phones into a multi-camera system
The StackScope API serves all 7 sites using CAL.pl Email, filterable and exportable, from £15 a month.