{"uid":"cap_NRhJ7eFrIwY-EHuBrdgX7","slug":"papacasper-email-deliverability-check-149ddfd7","name":"PapaCasper Email Deliverability Check","description":"A hosted MCP server exposing utility tools any AI agent can call over HTTP — page-to-markdown, SEO audits, robots/sitemap checks, and more.","url":"https://papacasper.com/mcp/pay/email_deliverability_check","method":"POST","headers":{},"bodySchema":{"type":"object","required":["domain"],"properties":{"domain":{"type":"string","description":"Bare domain to check, e.g. example.com"}}},"responseSchema":{"type":"object"},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_7D_XYl2kvWa7cABnp1jh2","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Checks email deliverability configuration for a domain by auditing DNS records like SPF, DKIM, DMARC, and MX","exampleAgentPrompt":"Can you check the email deliverability setup for acmecorp.com — I want to know if the SPF, DKIM, and DMARC records are properly configured?","exampleUseCases":[{"title":"Pre-launch email deliverability audit","prompt":"Before we start our email marketing campaign, can you check if sendgridclient.com has proper SPF, DKIM, and DMARC records set up so our emails don't land in spam?"},{"title":"Diagnosing email rejection issues","prompt":"Our emails from techstartup.io keep getting rejected or flagged as spam — can you audit the email deliverability configuration for that domain and tell me what's misconfigured?"},{"title":"Onboarding customer domain verification","prompt":"We just onboarded a new client and I need to verify that their domain, brightwave.co, is correctly set up for email deliverability before we start sending on their behalf."}],"resultDescription":"Returns a structured object containing the results of DNS-level email deliverability checks for the given domain, including the presence and validity of SPF, DKIM, DMARC, and MX records, along with identified issues or misconfigurations that could affect email delivery.","failureModes":["Invalid or non-existent domain returns an error or empty results","DNS lookup timeouts for domains with slow nameservers","Partial results if only some records are resolvable","Ambiguous results for domains with complex or multi-tenant email setups"],"whenToPreferThis":"Choose this endpoint when you need a quick, pay-per-use email deliverability check without setting up a full email testing service. Ideal for agents auditing customer domains, diagnosing email delivery issues, or verifying DNS email configuration before sending campaigns. At $0.0007 per call it's cost-effective for bulk domain checks or one-off audits.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T06:30:35.258Z","isFirstParty":false}