Email Warm-upFree email deliverability tools
Check the records receivers look at before they look at your reputation, plan a warm-up, and find block-list problems. Everything runs in your browser against public DNS. No account, no limits.
A day-by-day sending plan for one mailbox: start volume, daily increase, cap, weekends. Copy it or download CSV.
Free · no sign-upSPF Record CheckerLooks up a domain's SPF record, counts DNS lookups against the limit of 10, and flags the mistakes that get mail rejected.
Free · no sign-upDKIM Record CheckerFinds a domain's DKIM public key by selector, tries the common selectors for Google, Zoho, Microsoft, SES, SendGrid and Mailgun, and validates the record.
Free · no sign-upDMARC Record CheckerReads the _dmarc record, explains the policy, alignment and reporting tags, and tells you the safe path from p=none to p=reject.
Free · no sign-upEmail Blacklist CheckerChecks a domain or IP against the public DNS block lists that mail servers actually query, and explains what a listing means.
Free · no sign-upRecords fixed? Warm the mailbox up for free before the first campaign.