Sites using Kagoya Email 
Japanese hosting and email service by KAGOYA JAPAN Inc., identified by SPF include on kagoya.net.
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Stackdar watches every launch we detect and sends you the ones using Kagoya Email, by email, Slack or webhook. On every plan, from £15 a month.
See how alerts work137 sites
136 found by StackScope, 1 via launch platforms
- StackScope Wider Web 134
- StackScope Discovery (Indie) 2
- Product Hunt 1
Kagoya Email has been detected on 137 launches we've crawled, with 8 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: Toolmatch — 工具・パーツを探して、店の値段を比べる, today.
It's most commonly paired with jQuery, Google Fonts, and Google Tag Manager. By domain ending, launches using it are 2.0 times as likely as the average launch to live on a .com domain.
Domain endings using Kagoya Email
136 sites
- .com 86.03%
- .net 13.24%
- .app 0.74%
Share of new sites using Kagoya Email
Each dot is one launch day. Line is the 7-day rolling average; weekly averages before June 2026. 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
|
6.57% | 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% |
| … | ||||
| #179 | ▲108 |
Kagoya Email
Current page
|
<0.01% | 0.02% |
Percentages show adoption among indie launches: the share of all analysed launches, and of launches using any Email Hosting tool.Kagoya Email is typically used alongside Google Workspace rather than instead of it.Among August launches it ranked #162 in Email Hosting, up from #270 in July. All 3219 in Email Hosting →
Often used with
| Tool | Sites |
|---|---|
jQuery
|
109 |
Google Fonts
|
106 |
Google Tag Manager
|
103 |
Apache
|
96 |
Google Analytics
|
96 |
Tools most often detected on the same sites as Kagoya Email.
Recent launches we can show
3 of the 137 sites using Kagoya Email are product launches we list individually. The other 134 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 137 sites using Kagoya Email, filterable and exportable, from £15 a month.