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Free tools to check and fix your cold email setup

Test your domain, generate SPF, DKIM and DMARC records, verify an address and check your copy for spam words. Free, and no account needed.

Check your domain

See what inbox providers see when you send.

Email deliverability checkerCheck SPF, DKIM, DMARC, MX records and blocklists for a domain in one go.Open toolMX records checkerSee which mail servers receive email for a domain, and whether each one resolves.Open toolBlacklist checkerFind out if a domain or sending IP is on the major spam blocklists.Open tool

Generate DNS records

Build the record here, then paste it into your DNS provider.

SPF record generatorPick the services that send for you and get one valid SPF record.Open toolDKIM record generatorFormat a DKIM public key as a DNS record, or generate a new key pair.Open toolDMARC record generatorChoose a policy and a report address, and get your DMARC record.Open tool

Check your list and copy

Catch bad addresses and spammy wording before you send.

Email verifierCheck whether an email address exists before you send to it.Open toolSpam word checkerPaste your email and see the words and habits that trip spam filters.Open toolSubject line testerSee how a subject line looks in the inbox, and what might hurt opens.Open tool

Setup checks out? Start sending.

SuperSend runs cold email and LinkedIn in one sequence, with warmup on every inbox and DNS and bounce monitoring built in. Set up free, no card. 7-day free trial when you launch.

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