Weird web tools that do one job well.
A curated list — every tool here was tried by a real human before being posted. Sites with obtrusive ads, or without at least a free demo, get rejected.
- ✓ Curated by hand, not scraped
- ✓ Tried by a real human first
- ✓ No obtrusive ads
- ✓ Free demo at minimum
1 tool matching “dns”
Paste a domain and get an email-deliverability health verdict: DNS records, SPF/DKIM/DMARC authentication, and blacklist signals — in the browser, no signup, no mailbox access, no test sends.