Email deliverability
tools, free
Check email validity, blacklist status, SPF records, and DMARC policies instantly — no account needed.
Email Validator
Check if an email address is valid, deliverable, and safe to send to. Detects syntax errors, dead domains, disposable addresses, and known spam traps.
Blacklist Checker
Instantly check if your IP address or domain is listed on Spamhaus, Barracuda, SURBL, or 200+ other blacklists that affect inbox placement.
SPF Record Checker
Look up and validate your domain's SPF record. See which mail servers are authorized to send on your behalf and catch configuration errors before they hurt deliverability.
DMARC Checker
Inspect your domain's DMARC policy — mode (none, quarantine, reject), alignment settings, and reporting addresses. Know exactly how protected your domain is.
Need bulk validation or API access?
Validate thousands of emails at once, or integrate validation directly into your app.