Free tools
Free tools for cold email.
Set up your domain, plan your warmup and check your copy before you send. No signup, nothing stored.
- 01
SPF, DKIM & DMARC checker
Enter your sending domain to check SPF, DKIM, DMARC and MX at once, and see what to fix in plain words.
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Email warmup schedule calculator
Tell us how old your domain is and how much you want to send. Get a week-by-week warmup plan with the date you can start cold email.
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SPF record generator
Pick the services that send email for your domain and copy a ready-to-paste SPF record.
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DMARC record generator
Choose a policy and a report address, then copy a DMARC record ready for your DNS.
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Email verifier
Check an address before you send to it: format, mail server, throwaway domains and shared role inboxes.
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Spam word checker
Paste your subject and email. We flag spam trigger words and the formatting habits that make cold email look like a promotion.
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Mailbox & domain calculator
Enter how many leads you want to reach. See how many mailboxes and domains it takes to send that safely.
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