sagawa-exp.co.jp

Readiness by lane

Green: sagawa-exp.co.jp. Thin bar: Postage & Courier Services peer median.

Priority fixes for sagawa-exp.co.jp

Ordered by impact and by how common each practice is among peers.

1. Priority 1 · Accelerate

   HTML compressed

   Observed: The homepage HTML (21 KB) was delivered without gzip, Brotli or zstd compression.

   Why it matters: Compression usually shrinks HTML several times over, so the first bytes of the page arrive sooner on slow connections.

   What to do: Enable Brotli or gzip for text responses (HTML, CSS, JavaScript, JSON, SVG) at the CDN or origin.

   85% of Postage & Courier Services peers do this. Limit: Read from the homepage response only; other pages or regions may send different headers.

   Guide: How to Set a Website Performance Budget That Teams Can Keep

2. Priority 2 · Harden

   HSTS kept for at least a year

   Observed: The homepage response did not include a Strict-Transport-Security header.

   What to do: Send Strict-Transport-Security on HTTPS responses. Start with a short max-age (for example 300 seconds), confirm every subdomain works over HTTPS, then raise it in steps to 31536000. Add includeSubDomains only when all subdomains are HTTPS. HSTS preload is optional and hard to undo; hstspreload.org itself does not recommend it by default.

   39% of Postage & Courier Services peers do this.

   Guide: HTTPS and TLS Guide for Website Owners

3. Priority 3 · Harden

   DMARC policy enforces quarantine or reject

   Observed: The DMARC policy for sagawa-exp.co.jp was p=none, which asks receivers to take no action on failing mail.

   What to do: Publish DMARC with p=none and a reporting address first, fix any legitimate senders that fail SPF or DKIM alignment, then move to quarantine and finally reject.

   52% of Postage & Courier Services peers do this.

   Guide: A Practical Website Health Check for Owners

4. Priority 4 · Accelerate

   Static files cached for 30 days or more

   Observed: A same-site stylesheet or script was cacheable for no max-age, short of the 30-day benchmark.

   What to do: Give versioned (fingerprinted) CSS, JavaScript, fonts and images Cache-Control: public, max-age=31536000, immutable, and change the file name whenever the content changes.

   44% of Postage & Courier Services peers do this.

   Guide: Browser Caching Guide for Website Owners

What sagawa-exp.co.jp already does well

Practices fewer than half of Postage & Courier Services peers use.

• Modern image formats in useWebP or AVIF images detected.31% of peers
• No render-blocking scripts in <head>Head scripts load without blocking.39% of peers
• Structured data presentJSON-LD structured data found.42% of peers

What we saw

Homepage checked

https://www.sagawa-exp.co.jp/

Homepage response

HTTP 200

TLS

TLSv1.3, HTTP/2

Certificate

DigiCert, 198-day validity, expiring 2027-02-18

DNS operators

Akamai Edge DNS

DMARC policy

p=none

Homepage HTML

21 KB, uncompressed

Images on homepage

28 (svg 26, webp 8)

Limits: homepage only, one location, one moment. Header checks reflect the homepage response; other pages may differ.

Stack and providers

Seen in the homepage response, certificate and DNS. Provider pages compare how their customers configure the same checks.

All 31 checks

Select a gap for the method and fix. How each check works

Compare with other Postage & Courier Services sites

• dtdc.com55
• gls-group.com54
• mahex.com55
• uniuni.com56
• viettelpost.vn55

Postage & Courier Services readiness benchmark