Free cold email tools
MX lookup, SPF/DKIM/DMARC checker, email permutator, generators and calculators. DNS tools are free and uncapped.
Each tool is a working page, not a signup wall. DNS lookups, generators, the permutator, and the calculators are free and uncapped. Finder, verifier, and catch-all share a small daily cap with the homepage because they talk to live mail servers — then it is the same product you would use in the dashboard.
Open any tool for the full guide: what it checks, how to read the result, when it is the wrong instrument, and the mistakes that bounce a sending domain. Illustrative addresses on those pages are always jane.doe@company.com-style fiction, never a real person.
Free work email finder
Find a work email from a name and company domain. Checked against the mail server, not guessed from a database.
Free email verifier
Check whether a work mailbox exists without sending mail to it. Catch-alls are labelled, not dressed up as verified.
Email permutator
Generate every common work-email pattern for a name and domain. Candidates only — we never publish a real person's address.
MX lookup
See which mail server a domain uses, and whether it looks like Google Workspace, Microsoft 365, or something else.
SPF, DKIM and DMARC checker
Look up the three DNS records that decide whether Gmail and Outlook trust mail from a domain.
SPF record generator
Build a v=spf1 TXT record from the providers you actually send through.
DMARC record generator
Build a _dmarc TXT record. Start at p=none, then tighten once the reports look clean.
Catch-all domain checker
Some domains accept mail to any address. No verifier can confirm a mailbox there — we detect it and tell you.
Email bounce rate calculator
See what a bounce rate does to a sending domain, not just to one campaign.
Cold email ROI calculator
What a list of verified work emails costs at each vendor's own published rate, including ours.
Related
- Work email finder
Find a work email from a name and company domain. Verified against the mail server. You only pay when the mailbox exists.
- SPF, DKIM and DMARC setup by provider
Provider-specific steps for publishing SPF, DKIM and DMARC, with a live DNS checker on every page.
- Email verifier
Verify a work email without sending to it. Catch-alls are labelled catch-all, not dressed up as valid.
- Bulk email finder
Upload a CSV of names and company domains. Get a verified file back. Catch-alls, misses and repeats are free.