Add 1-100 recipients to an existing campaign. This consequential write immediately changes the campaign's recipient set and may lead to outreach when the campaign is active. A successful request can still contain failed recipients, so inspect every result and both counts. Production Campaigns entitlement and mutation behavior are not live-verified.

Check whether a LinkedIn profile has a personal email, work email, or phone without revealing it or consuming credits. Requires a paid ContactOut production entitlement.

Estimate matching people and available personal emails, work emails, and phones from substantive People Search filters without consuming credits. This endpoint requires a paid ContactOut production entitlement; sandbox sample access does not confirm production access.

Queue asynchronous deliverability verification for 1-100 email addresses, optionally delivering results to an HTTP or HTTPS callback URL; may consume verifier credits.

Queue asynchronous contact discovery for 1-1000 LinkedIn profiles, optionally delivering results to a callback URL; may consume credits per profile.

Return company profiles for 1-30 domains; each found company consumes a search credit.

Return a professional profile for a regular LinkedIn profile URL, optionally including contact data; may consume search, email, and phone credits.

Find and enrich one person using a LinkedIn URL, email, or phone; alternatively, provide a name plus employer, education, location, or job-title evidence. May consume search credits, plus contact-data credits for include on your own ContactOut connection only.

Return a professional profile matched from an email address, optionally requesting real-time work-email verification. A successful match may consume email and phone credits.

Resolve an email address to its matching LinkedIn profile URL. A successful match consumes one email credit.

Return ContactOut API credit usage and quotas for a billing month. Remaining and over-quota fields are available for postpaid accounts, while prepaid accounts report remaining balances in quota fields. ContactOut sandbox responses contain fixed illustrative samples; never present those values as the connected account's real balances.

Get the status and available per-email results of an asynchronous bulk email-verification job.

Return one campaign's sequence steps and optionally its performance statistics. Production Campaigns entitlement depends on the connected ContactOut account.

Return unordered SHA-256 hashes of normalized personal emails found for 5-100 distinct LinkedIn profiles. Hashes are not mapped back to profiles and may consume email credits.

Reveal email and optionally phone contact information for one regular LinkedIn profile URL; consumes credits when data is found.

Synchronously reveal contact information for 1-100 LinkedIn profiles; may consume email and phone credits per profile.

Get the status and available results of an asynchronous LinkedIn contact-info batch job.

Return one page of email campaigns and their lifecycle statuses. Production Campaigns entitlement is unverified; the connected API token may require additional ContactOut plan access.

Return one page of key decision makers for the best-matching company. For the first page, provide a company LinkedIn URL, domain, or name. Returned profiles consume search credits; reveal_info may also consume email and phone credits on your own ContactOut connection only.

Destructively remove 1-100 recipients from an existing campaign by email. The request can partially succeed, so inspect every result and both counts. Production Campaigns entitlement and this mutation remain unverified without an isolated campaign fixture.

Return one page of companies matching identity, size, location, industry, technology, revenue, or founding-year filters. Each returned company consumes a search credit.

Return one page of professional profiles matching person, role, employer, education, location, and contact-availability filters. Returned profiles consume search credits; reveal_info may also consume email and phone credits on your own ContactOut connection only.

Start a draft ContactOut campaign or resume a stopped campaign. This can immediately begin sending real outreach to the campaign's recipients and is an irreversible external side effect; confirm the campaign ID and intent before calling. Calling it for an already-active campaign is an idempotent success. Production Campaigns entitlement depends on the connected account.

Stop a running ContactOut campaign, interrupting its outreach. This is a consequential lifecycle change; use only with an explicitly selected active campaign. Repeating the request for an already-stopped campaign is treated as an idempotent success when ContactOut returns success.

Check one email address for valid, invalid, accept-all, disposable, or unknown deliverability. A valid, invalid, or accept-all result may consume one verifier credit.