Free email deliverability tools
Find out if a domain is ready to send cold email, what is wrong and the exact fix. Free, no sign-up, and nothing you look up is stored.
MX Lookup
Mail servers and priorities, and whether each one resolves.
SPF Checker
The SPF record, its syntax, its policy and its DNS lookup count.
DMARC Checker
The DMARC record, its policy, its reports and what it covers.
Domain ready? Give your AI agent the same checks
Ahel connects Claude Code, Codex or Cursor to data tasks over MCP, from email checks to EU registers and SEO. Pay per call, with the price shown first.