{"uid":"cap_tZ19vFAgr_0khV7UmDcHZ","slug":"delx-commerce-email-spf-alignment-check-a9088bfe","name":"Delx Commerce — Email SPF Alignment Check","description":"Pay-per-result APIs for agents. No signup. Exact price. Verifiable delivery. USDC on Base + Solana via x402.","url":"https://commerce.delx.ai/api/v1/x402/email-spf-alignment-check?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"mode":{"type":"string","maxLength":8192,"description":"Mode supplied to Email SPF Alignment Check; used only for this bounded calculation and processed in memory without retention."},"from_domain":{"type":"string","maxLength":8192,"description":"From Domain supplied to Email SPF Alignment Check; used only for this bounded calculation and processed in memory without retention."},"mail_from_domain":{"type":"string","maxLength":8192,"description":"Mail From Domain supplied to Email SPF Alignment Check; used only for this bounded calculation and processed in memory without retention."}}},"responseSchema":{"type":"json","example":{"result":{"mode":"relaxed","aligned":true},"schema":"delx/util-email-spf-alignment-check/v1","status":"pass","evidence":{"retained":false,"input_sha256":"ea586d1c403c2ce4bdabccfde8d16390a6f39bd162622d5aa8ca6b864aa2c9de","external_calls":0},"operation":"web_reliability:email_spf_alignment_check"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_P77U7QfpiIKi8GGK9FWLC","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Checks whether the From domain and MAIL FROM domain are SPF-aligned (relaxed or strict) for DMARC compliance purposes","exampleAgentPrompt":"Check if the email from domain 'newsletter.acme.com' and MAIL FROM domain 'bounce.acme.com' are SPF-aligned in relaxed mode — I need to know if they'll pass DMARC.","exampleUseCases":[{"title":"DMARC compliance verification for bulk sender","prompt":"I'm setting up a bulk email campaign and want to make sure my From domain 'marketing.mybrand.com' and MAIL FROM domain 'send.mybrand.com' are SPF-aligned in relaxed mode before we go live."},{"title":"Email deliverability debug for transactional mail","prompt":"Our transactional emails from 'noreply@app.example.com' are failing DMARC — can you check if the MAIL FROM domain 'bounce.sendgrid.net' is SPF-aligned with 'app.example.com' in strict mode?"},{"title":"Pre-send SPF alignment audit for new subdomain","prompt":"We just set up a new subdomain 'alerts.company.io' for sending notifications, with MAIL FROM 'mta.company.io' — can you verify the SPF alignment in relaxed mode to make sure we won't get flagged?"}],"resultDescription":"Returns a JSON object indicating whether the two domains are SPF-aligned (aligned: true/false), the mode used (relaxed or strict), and a pass/fail status. Also includes verifiable evidence: an input SHA-256 hash, number of external calls made (0 for privacy), and a flag confirming no data was retained.","failureModes":["Invalid or missing from_domain or mail_from_domain fields causing a 400 error","Unsupported mode value (only 'relaxed' or 'strict' expected)","Payment not included or invalid USDC payment via x402 causing a 402 response","Malformed domain strings resulting in parse errors","Network timeout if the service is temporarily unavailable"],"whenToPreferThis":"Choose this endpoint when you need a lightweight, pay-per-call, no-signup check of SPF alignment between a From domain and MAIL FROM domain as part of DMARC validation. It is ideal for agents that need to verify email authentication configuration programmatically without retaining input data. Prefer it over full DMARC audit services when you only need the SPF alignment result and want verifiable, privacy-preserving computation with USDC micropayment billing.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T00:53:50.993Z","isFirstParty":false,"canonicalSlug":"delx-commerce-email-spf-alignment-check-a9088bfe"}