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Get unstuck and keep moving.

Find a guide for your list, result, credits or connection.

Search guides

Lists

Keep source rows intact and choose the right email column.

What valid, invalid, catch-all and unknown mean.

Interpret SPF, DKIM and DMARC signals.

Free renewal, reservations, charges and returns.

Keys, idempotency, caps and result pagination.

Verify signatures and deduplicate event IDs.

Choose a worksheet or paste a public sheet link.

Select CRM contacts while keeping their source identity.

Keep audience membership and consent state intact.

Authorize a site and set its verification policy.