Email tools
Test an email, check the DNS records that prove it's yours, and see how other mail servers and blocklists see your server.
Test and analyze
Decode and encode
DNS and authentication
- DNS lookupMX, TXT, A and other DNS records for a domain, or reverse DNS for an IP.
- DKIM key generatorA new DKIM key pair and the DNS record to publish, made in your browser.
- SPF IP checkIs this IP allowed to send for this domain? The SPF result, step by step.
- SPF flattenerTurn includes into IP lists to get under SPF's 10-lookup limit.
Servers and reputation
- SMTP probeWhat a domain's mail server offers: STARTTLS, extensions and catch-all.
- PTR checkReverse DNS for a mail server's IP, and whether it resolves back (FCrDNS).
- Blocklist checkCheck an IP or domain against Spamhaus, SpamCop, Barracuda and other blocklists.
- Email send rateHow long a campaign takes to send, and which limit holds it up.
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