{"uid":"cap_Ddf7KbqmazC4ZRC0IP6v2","slug":"halowerk-buerowerk-smtp-octet-compatibility-email-validator-5ca43c98","name":"HALOWERK buerowerk SMTP Octet-Compatibility Email Validator","description":"HALOWERK buerowerk — bezahlte Endpunkte nach x402. Preise in USDC auf Base Mainnet.","url":"https://buero.halowerk.com/v1/baumarkt/mail/smtp-octet-compatibility?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"emails":{"type":"array","items":{"type":"string","maxLength":320,"minLength":1},"maxItems":500,"minItems":1}}},"responseSchema":{"type":"json"},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.004","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.004/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_3sRGi3JUB1KkYBKDQcSYZ","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.004","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates a list of email addresses for SMTP octet-compatibility, checking conformance with mail server constraints.","exampleAgentPrompt":"Can you check these email addresses for SMTP octet compatibility before I send my campaign: user@example.com, test.name+tag@domain.co, and weirdchar@münchen.de?","exampleUseCases":[{"title":"Pre-campaign email list cleanup","prompt":"I have a list of 200 subscriber emails I'm about to send a newsletter to — can you validate them all for SMTP octet compatibility so I don't bounce?"},{"title":"New user registration email check","prompt":"Before we store these newly registered user emails in our system, can you run them through the SMTP octet-compatibility check to make sure they're deliverable?"},{"title":"CRM import deliverability audit","prompt":"We just imported a contact list from a legacy CRM with some weird international addresses — can you check all of them for SMTP octet compatibility issues?"}],"resultDescription":"A JSON response indicating the SMTP octet-compatibility status of each submitted email address, likely including per-address results or a summary of which addresses pass or fail SMTP octet constraints.","failureModes":["Empty email array returns validation error","Email strings exceeding 320 characters are rejected","Array exceeding 500 items is rejected","Malformed JSON body returns 400 error","Payment not provided or insufficient USDC results in 402 response","Invalid email format may cause per-item failure in response"],"whenToPreferThis":"Choose this endpoint when you need to validate email addresses specifically for SMTP octet-level compatibility — particularly useful for international or unusual addresses before bulk sending, or when pre-screening user-submitted emails for mail server conformance. Prefer this over generic format validators when SMTP delivery compliance (not just RFC syntax) is the concern.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-22T00:42:33.938Z","isFirstParty":false,"canonicalSlug":"halowerk-buerowerk-smtp-octet-compatibility-email-validator-5ca43c98"}