Free Email Blacklist & IP Blocklist Check
Blocklists are shared reputation databases that receiving servers consult before accepting mail. Being listed on a major one can stop delivery entirely, and on a shared IP you may be listed for someone else's behaviour.
Worked example — 198.51.100.24
Sample demonstration- PassSpamhaus SBL
not listed - PassSpamhaus PBL
not listed - PassBarracuda
not listed - PassSpamCop
not listed - PassSURBL
not listed
Clean across all five lists checked.
SadaSend runs these checks continuously on your sending domains, and refuses to send until they pass — so mail Gmail would reject never leaves.
Start freePredefined Real-World Test Scenarios
Live verification vectorsValidates that a reputable public IP has zero listings across major DNSBLs.
Tests clean sending reputation across Barracuda, SpamCop, and DNSBL databases.
Inspects SadaSend’s dedicated outbound sending IP for clean reputation.
Verifies domain-level listing against major domain reputation databases.
What this checks
- Major IP blocklists — Spamhaus, Barracuda, SpamCop
- Domain blocklists — SURBL, URIBL
- Whether the listing is for the IP or a neighbour on a shared range
- Delisting route for each list that has you
Ready for rock-solid transactional email?
Automated 2048-bit DKIM key rotation, domain-level SPF alignment, and suppression firewalls. Send 6,000 free emails every month with zero credit card required.
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