Free tools

Each of these works without an account and without a card. They are the parts of this job you should not have to pay to do once.

• Free email verifier

  Check whether a work email can actually receive mail, with an honest answer when the server will not say.

• Free email permutator

  Work out the email formats a company is likely to use, in the order they are likely to use them.

• Free SPF and DMARC checker

  See who handles a domain's mail and whether its SPF and DMARC will let your sending through.