MCP servers and skills: search, filter by where they run, and compare.
Free, read-only email and DNS checks: SPF, DKIM, DMARC, MX, DNS records, blocklists, domain health.
Hosted by authorNo licenseFew starsNo key
Verify emails (syntax, MX, SMTP mailbox, catch-all), test email DNS and check Spamhaus blocklists.
Hosted by authorNo licenseFew starsNo key
Signup fraud checks: score emails and IPs, look up IPs and manage your blocklist.
Hosted by authorNo licenseFew starsNo key
Monitoring for agencies — uptime, SSL, DNS, blocklists, AI visibility, MCP health. 8 no-auth tools.
Hosted by authorNo licenseFew starsNo key
Scan and fix a domain's email deliverability (SPF, DKIM, DMARC, MTA-STS, BIMI, DNS blocklists).
Hosted by authorNo licenseFew starsNo key
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