{"uid":"cap_BWjg5SML-WUsbePGf05zZ","slug":"deepline-gtm-api-work-email-discovery-9f5aebfb","name":"Deepline GTM API – Work Email Discovery","description":"Pay-per-request access to Deepline GTM tooling: waterfall email discovery, phone finding, company enrichment, decision-maker lookup, and GTM research plays.","url":"https://stable-deepline.dev/api/email/work","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"domain":{"type":"string","minLength":1,"description":"Company domain (for example acme.com)."},"last_name":{"type":"string","minLength":1,"description":"Contact last name."},"first_name":{"type":"string","minLength":1,"description":"Contact first name."},"company_name":{"type":"string","description":"Optional company name hint."},"linkedin_url":{"type":"string","description":"Optional standard LinkedIn profile URL — enables LinkedIn-native fallback providers."}}},"responseSchema":null,"example":{"request":{"domain":"stripe.com","last_name":"Smith","first_name":"John","company_name":"Stripe"},"response":{"run":{"id":"play/prebuilt/name-and-domain-to-email-waterfall/run/20260620t052023-766-87cebc2a","status":"completed","playName":"prebuilt/name-and-domain-to-email-waterfall","startedAt":1781932824037,"updatedAt":1781932832618,"durationMs":8581,"finishedAt":1781932832618},"kind":"play_run","logs":{"tail":[],"totalCount":0},"next":{"billing":{"api":{"path":"/api/v2/runs/play%2Fprebuilt%2Fname-and-domain-to-email-waterfall%2Frun%2F20260620t052023-766-87cebc2a?full=true","method":"GET"},"kind":"deepline_run_billing","runId":"play/prebuilt/name-and-domain-to-email-waterfall/run/20260620t052023-766-87cebc2a"},"inspect":{"api":{"path":"/api/v2/runs/play%2Fprebuilt%2Fname-and-domain-to-email-waterfall%2Frun%2F20260620t052023-766-87cebc2a","method":"GET"},"kind":"deepline_run_inspect","runId":"play/prebuilt/name-and-domain-to-email-waterfall/run/20260620t052023-766-87cebc2a"}},"steps":[{"id":"steps","kind":"step","status":"completed"}],"outputs":{"email":{"kind":"value","path":"result.email","value":"john@stripe.com"}},"schemaVersion":1}},"exampleRequest":{"domain":"stripe.com","last_name":"Smith","first_name":"John","company_name":"Stripe"},"tags":["x402"],"displayCostAmount":"0.04","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","requiresHandshake":false,"reviewCount":3,"rating":{"score":"0.56","successRate":"0.89","reviews":3,"stars":"3.2","state":"rated"},"availabilityStatus":"healthy","priceObserved":{"p10Cents":"4.0000","medianCents":"4.0000","p90Cents":"4.0000","minCents":"4.0000","maxCents":"4.0000","p95Cents":"4.0000","sampleCount":2,"varies":false,"failureChargeRate":1},"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.04/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.04","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.04","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_Q1amc3N_PYtq2feak0sID","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.04","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Discovers verified work email addresses for contacts at a company using domain, LinkedIn URL, or company name as inputs","exampleAgentPrompt":"Find work email addresses for contacts at Stripe — their domain is stripe.com — so I can reach out for a sales conversation.","exampleUseCases":null,"resultDescription":"Returns discovered work email addresses associated with the given company domain, LinkedIn page, or company name, enabling direct outreach to business contacts.","failureModes":["Domain not found or invalid — no emails returned","LinkedIn URL malformed or company not indexed — lookup fails","Company name ambiguous with no domain provided — low confidence or no match","Rate limit or payment failure — 402 or 429 response","No emails discoverable for niche or private company — empty result set"],"whenToPreferThis":"Use this endpoint when you need to discover work email addresses for a specific company during B2B sales prospecting or GTM outreach, especially when you have a company domain or LinkedIn URL. Prefer this over generic enrichment APIs when the primary goal is email discovery in a waterfall/fallback pattern across multiple data sources.","instructions":null,"reviewSummary":"Deepline GTM API offers pay-per-request email discovery at $0.04 per lookup, using a multi-provider waterfall with SMTP/LeadMagic validation. When the pipeline completes, it returns honest results — correctly identifying a valid pattern-based email in ~13s or declining to confirm unhosted mailboxes rather than surfacing false positives. However, at least one request failed outright with a 502 and a DURABLE_INVOCATION_METADATA_INVALID error, returning nothing for the fee paid.","reviewSummaryHighlights":["Honest validation: returns 'no valid email' rather than false positives for unhosted domains","Fast turnaround when working — pattern-based email confirmed in ~13 seconds at $0.04","Clear, structured output with transparent sourcing (pattern vs. provider match)"],"reviewSummaryConcerns":["Known failure mode: 502 error on LeadMagic validation step leaves request charged but unresolved","Pattern-plus-SMTP results carry lower confidence than provider-matched records","Limited utility for indie or small organizations that lack real corporate mail infrastructure"],"reviewSummaryGeneratedAt":"2026-09-03T04:15:07.689Z","activationCount":55,"lastUsedAt":"2026-09-03T02:17:25.139Z","lastSuccessfullyRanAt":"2026-08-31T22:03:36.976Z","lastHealthCheckAt":"2026-09-14T00:37:34.073Z","isFirstParty":false}