[ FREE TOOLS ]
Deliverability, diagnosed in seconds.
Inbox placement starts with clean DNS and clean copy. Run these free checks on any domain — no signup. When you’re ready to send at scale without babysitting reputation, CogniLead runs the rest.
4 checks · no account · nothing stored
DNS diagnostics
SPF checker
Look up and grade your SPF record — policy strength, multiple-record errors, and DNS-lookup limits.
Open tool →DMARC checker
Check your DMARC policy, enforcement level, and reporting — the records Gmail and Yahoo now require for bulk senders.
Open tool →Blacklist checker
Resolve your mail-sending IP and check it against Spamhaus ZEN, SpamCop, and Barracuda — the well-known DNSBLs.
Open tool →Your leads deserve to reach an inbox.
Every email you send without protection is a gamble on whether it reaches the inbox at all. Bring your leads — CogniLead handles the warmup, the safety checks, and the cleanup, so you don't have to think about deliverability again.
100 sends a month, free forever · no credit card · cancel any time