What powers 1st-mail.jp?
Last seen Jun 2026 · 10 technologies across 8 categories
Analytics
Google Analytics
since Mar 2020
CDN
Google Hosted Libraries
since Feb 2022
JavaScript libraries
Operating systems
UNIX
since Jan 2019
Programming languages
Tag managers
Google Tag Manager
since Mar 2020
Web server extensions
Web servers
Audience
- 97% phone
- 3% desktop
Japan
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
2.55 / 10 · ranked #2,404,197 of all domains
7 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.5 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Weight: 2.7 MB · 29 requests
Homepage as crawled by the HTTP Archive, Jul 2026.