Email verification accuracy and every other question we get asked

Accuracy depends on what the receiving server is willing to tell us, and we report that rather than averaging it into a single number. On a normal domain the server answers whether the mailbox exists and we mark the row deliverable or undeliverable on that answer. On a catch-all domain no external check can confirm one mailbox, so we mark it catch-all. Any tool that reports a confident percentage on a catch-all domain is reporting a guess.

A catch-all server accepts mail addressed to every possible recipient on the domain, including recipients that do not exist. We detect it by asking the server about an address that cannot exist and seeing whether it accepts that too. When it does, no outside check can tell a real mailbox from an invented one on that domain, so we label the row catch-all and it does not count as a verified find.

Because they ask different questions and interpret the answers differently. Some report a catch-all domain as valid, which inflates their accuracy claim and deflates your deliverability. Some stop at the MX record. We report each check separately, so when you compare results you can see which check produced the difference.

No. We open the conversation a sending server would open and stop before any message is transmitted. The person on the other end sees nothing.

No. Only verified finds count against your monthly limit. A failed find, a catch-all row, a suppressed address and a duplicate all cost nothing.

No. Every plan is a subscription with a monthly limit. There are no credit packs and no per unit overage. Your monthly limit renews with the billing period and unused volume does not roll over.

You keep your results and the finds above your limit count against the next period, or you move up a plan and the new limit applies straight away. There are no credit packs to buy and no per unit overage to approve.

Yes, at any time, from inside the account. Access runs to the end of the period you already paid for and nothing renews after that.

Yes. You can run the tool on this site before you subscribe, with the live domain and address checks. Every plan in the pricing table is a paid subscription.

We work with business contact data: addresses published or inferable for a named person in a named professional role at a named company, processed on the basis of legitimate interests in business to business communication. We do not profile private individuals and we do not run reverse lookups on personal addresses. The security page sets out the scope, the basis and the controls.

A person writes to [email protected] about an address that belongs to them and we act within one month. Erasure is permanent: the address goes on a suppression list so it is never returned again, to you or to any other customer.

No. Your searches, your lists and your exports belong to your account. We do not sell them, we do not share them with other customers and we do not use them as a data source for anyone else.

Yes. Upload a CSV of addresses to verify them, or a CSV of names and domains to find the addresses first. Deduplication and your suppression list run before any check, so you never pay to process the same address twice.

HubSpot, Pipedrive and Salesforce natively from the Growth plan upward, and CSV on every plan. Your original columns come back attached to the exported rows.

Yes. The REST API and webhooks for finding and verification are included from the Scale plan upward. The endpoints, the response shape and the rate limit behaviour are on the email verifier API page.

Starter includes 2 seats, Growth includes 10, and Scale and Enterprise include unlimited seats. Seats are not priced per user on any plan.

No. You work from the site, from a CSV or from the API. Anything that reads a logged in session on another service creates a risk for your own account there, and we would rather not put you in that position.