You shipped. But did you check?
Built with Cursor, Replit, v0, or Bolt and deployed? Your emails might be going to spam, your .env could be publicly accessible, www might not work, and your links probably look ugly when shared.
This scans your live domain and shows you exactly what's broken - sorted by what to fix first, with copy-pasteable commands and DNS records.
EmailSPF, DKIM, DMARC, blacklists - why your emails land in spam
SSLCertificate, HTTPS redirect - why Chrome says "Not Secure"
Secrets.env files, .git exposure, API keys in page source
DNSwww subdomain, apex redirect - why some visitors get errors
SEOTitle, meta tags, OG, Twitter Cards, sitemap, viewport
SpeedResponse time, compression, cold starts, mixed content