mailcow on new websites
Self-hosted mail server suite with a web admin panel, built on Docker.
- Sites using mailcow
- 86
- since Jul 2026
- Last 30 days
- 0.0%
-
of new sites, to Oct 19
no change on the 30 days before - Last 7 days
- 0.0%
- of new sites, 7-day average
no change on the week before
| First seen | Jul 9, 2026 |
|---|---|
| Last seen | Oct 20, 2026 |
| Website | mailcow.email |
What we found
- mailcow appeared on about 20 new sites in the last 30 days.[1]
Share of new sites using mailcow
The line is the 7-day average share of new sites that use mailcow, since 10 September.
Who uses mailcow
| Type | Sites | Share | Bar |
|---|---|---|---|
| Developer Tools | 5 | 15.6% | |
| Health | 5 | 15.6% | |
| AI | 4 | 12.5% | |
| Marketing | 4 | 12.5% | |
| Productivity | 4 | 12.5% | |
| Social | 3 | 9.4% | |
| E-commerce | 2 | 6.3% | |
| Finance | 2 | 6.3% | |
| Education | 1 | 3.1% | |
| Games | 1 | 3.1% | |
| Hiring & HR | 1 | 3.1% |
| Country | Sites | Share | Bar |
|---|---|---|---|
 Canada |
3 | 16.7% | |
 US |
3 | 16.7% | |
 Brazil |
2 | 11.1% | |
 Germany |
2 | 11.1% | |
 France |
2 | 11.1% | |
 Netherlands |
2 | 11.1% | |
 Switzerland |
1 | 5.6% | |
 Estonia |
1 | 5.6% | |
 UK |
1 | 5.6% | |
 Sweden |
1 | 5.6% |
| Ending | Sites | Share | Bar |
|---|---|---|---|
| .com | 36 | 42.4% | |
| .app | 6 | 7.1% | |
| .fr | 4 | 4.7% | |
| .online | 4 | 4.7% | |
| .org | 4 | 4.7% | |
| .ca | 3 | 3.5% | |
| .me | 3 | 3.5% | |
| .br | 2 | 2.4% | |
| .cloud | 2 | 2.4% | |
| .co | 2 | 2.4% | |
| .de | 2 | 2.4% |
Email Hosting on new sites
| # | Movement | Tool | Share of category | Bar | |
|---|---|---|---|---|---|
| 1 | – |
Google Workspace
|
19.9% | ||
| 2 | – |
Hostinger Email
|
16.6% | ||
| 3 | – |
GoDaddy Email
|
8.0% | ||
| 4 | – |
Microsoft 365
|
6.9% | ||
| 5 | ▲1 |
IONOS Email
|
5.9% | ||
| … | |||||
| 368 | ▼51 |
mailcow
|
<0.1% | ||
All-time shares across the new sites we track: of all of them, and of the sites using any Email Hosting tool. Among September launches it ranked #382 in Email Hosting, down from #331 in August. All 4860 in Email Hosting
Often used with mailcow
| Tool | Sites with both | vs all new sites |
|---|---|---|
jQuery
|
32 | 2.6x |
Cloudflare DNS
|
59 | 2.3x |
Tools that turn up far more often on mailcow sites than on new sites in general, and how many times as common each one is there.
Recently launched products built on mailcow
23 of the 86 sites using mailcow are product launches we list individually. The other 63 are new business and personal sites: they count towards the figures above but are not listed here. A watch sends them to you.
Showing the most recent 12 of 23.
Watches, exports and the API give you all 86 sites using mailcow, from £15 a month.
Notes
- These figures cover websites that went live since April 2026, not the web as a whole.
- 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.
How this page is made
FirstSited looks at each new website near the day it goes live and records what it was built with. We do not go back later, so these figures describe what sites launch with, not what they run today. A site counts towards mailcow when we detect mailcow on it at that look.
Every share on this page is a proportion of the new sites we were tracking at the time. Sites we found across the wider web count towards the figures, but only product launches are listed by name. How we detect technologies · How we find new sites