DNSly monitors your domains across public blacklists, audits SPF / DKIM / DMARC, and alerts you the moment something breaks.
No signup required for the free check.
Everything you need to keep your outbound infrastructure healthy.
We run DNS-based lookups against every free public blacklist we can reach — Spamhaus family, Barracuda, SpamCop, PSBL, Mailspike, UCEPROTECT, Spamrats, SpamEatingMonkey, NordSpam, 0spam, SURBL, URIBL and more.
Not every blacklist carries the same weight at every mailbox provider. We map each DNSBL to the providers documented to consult it and give you a separate 0–100 score for each — so you know exactly which inbox you're at risk of losing.
One click gives you a full breakdown of SPF, DKIM, DMARC, MX, and rDNS — with actionable fix instructions for every failing check.
Start free. Upgrade when you need more domains.
Solo SDRs and small teams.
Agencies and power users.