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Developers

Set up ChatGPT, Claude, Hermes, Grok or Codex, check the connection, and control verification spending.

Keys, idempotency, caps and result pagination.

Verify signatures and deduplicate event IDs.

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.

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.