Deliverability tools — free, no sign-up
Cold email only works if it lands in the inbox. Check the fundamentals of your sending setup in seconds — everything runs in your browser.
Email Verifier
Check whether an email address is valid — the syntax, and whether its domain can actually receive mail (MX record). Free, no sign-up.
Open →SPF Checker
Look up a domain's SPF record and check it is present and valid. SPF tells inboxes which mail servers may send for your domain.
Open →DKIM Checker
Look up a domain's DKIM public key for a selector. DKIM cryptographically signs your mail so inboxes can verify it was not tampered with.
Open →DMARC Checker
Look up a domain's DMARC policy. DMARC ties SPF and DKIM together and tells inboxes what to do with mail that fails.
Open →leads2mail manages all of this for you. As a done-for-you B2B sales rep, we set up and monitor SPF, DKIM, DMARC and address verification, and send from your own inbox. See how it works and what it costs →