<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
  <!-- Homepage -->
  <url>
    <loc>https://headerscope.com/</loc>
    <lastmod>2026-01-01</lastmod>
    <changefreq>weekly</changefreq>
    <priority>1.0</priority>
  </url>

  <!-- Core Reference Pages -->
  <url>
    <loc>https://headerscope.com/glossary</loc>
    <lastmod>2026-01-01</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.9</priority>
  </url>
  <url>
    <loc>https://headerscope.com/headers-reference</loc>
    <lastmod>2026-01-01</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.9</priority>
  </url>
  <url>
    <loc>https://headerscope.com/authentication-explained</loc>
    <lastmod>2026-01-01</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.9</priority>
  </url>
  <url>
    <loc>https://headerscope.com/red-flags</loc>
    <lastmod>2026-01-01</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.9</priority>
  </url>

  <!-- Action Guide Pages -->
  <url>
    <loc>https://headerscope.com/what-to-do-if-phished</loc>
    <lastmod>2026-01-01</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.8</priority>
  </url>
  <url>
    <loc>https://headerscope.com/report-phishing</loc>
    <lastmod>2026-01-01</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.8</priority>
  </url>
  <url>
    <loc>https://headerscope.com/security-checklist</loc>
    <lastmod>2026-01-01</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.8</priority>
  </url>
  <url>
    <loc>https://headerscope.com/setup-guides</loc>
    <lastmod>2026-01-01</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.8</priority>
  </url>

  <!-- Educational Content Pages -->
  <url>
    <loc>https://headerscope.com/phishing-quiz</loc>
    <lastmod>2026-01-01</lastmod>
    <changefreq>weekly</changefreq>
    <priority>0.7</priority>
  </url>
  <url>
    <loc>https://headerscope.com/common-attacks</loc>
    <lastmod>2026-01-01</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.7</priority>
  </url>

  <!-- Interactive Tools -->
  <url>
    <loc>https://headerscope.com/domain-checker</loc>
    <lastmod>2026-01-01</lastmod>
    <changefreq>weekly</changefreq>
    <priority>0.8</priority>
  </url>
  <url>
    <loc>https://headerscope.com/link-analyzer</loc>
    <lastmod>2026-01-01</lastmod>
    <changefreq>weekly</changefreq>
    <priority>0.8</priority>
  </url>
  <url>
    <loc>https://headerscope.com/sender-verification</loc>
    <lastmod>2026-01-01</lastmod>
    <changefreq>weekly</changefreq>
    <priority>0.8</priority>
  </url>

  <!-- Advanced/Professional Pages -->
  <url>
    <loc>https://headerscope.com/enterprise-guide</loc>
    <lastmod>2026-01-01</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.9</priority>
  </url>
  <url>
    <loc>https://headerscope.com/industry-guides</loc>
    <lastmod>2026-01-01</lastmod>
    <changefreq>monthly</changefreq>
    <priority>0.9</priority>
  </url>
</urlset>
