Email Deliverability Audit — SPF/DKIM/DMARC Check
MCP ServerFreeEmail deliverability audit API for AI agents. Analyze any domain's email authentication: SPF record validation, DKIM selector check, DMARC policy analysis, MX record health, and composite deliverability score 0-100 with prioritized fix recommendations. Tools: email_audit_deliverability. Use this w
Capabilities6 decomposed
spf record validation
Medium confidenceThis capability checks the SPF (Sender Policy Framework) records of a specified domain to ensure that the domain's email servers are authorized to send emails on behalf of that domain. It uses DNS queries to retrieve the SPF record and validates it against the sending IP address. The implementation leverages a robust DNS resolver to ensure accurate and timely responses, making it distinct in its reliability and speed.
Utilizes a high-performance DNS resolver optimized for quick SPF record lookups, ensuring minimal latency.
More efficient than traditional SPF checkers due to its optimized DNS querying mechanism.
dkim selector check
Medium confidenceThis capability verifies the DKIM (DomainKeys Identified Mail) selector for a domain by querying the DNS for the DKIM record associated with the specified selector. It checks if the DKIM signature can be validated against the public key provided in the DNS record. The approach ensures that the selector is properly configured and that the DKIM signing process is functioning as intended.
Incorporates a systematic approach to validate DKIM selectors, ensuring comprehensive checks against multiple selectors if specified.
More thorough than basic DKIM checkers by allowing multiple selector validations in a single query.
dmarc policy analysis
Medium confidenceThis capability analyzes the DMARC (Domain-based Message Authentication, Reporting & Conformance) policy of a domain by retrieving the DMARC record from DNS. It evaluates the policy's alignment with SPF and DKIM records and provides insights into the effectiveness of the domain's email authentication strategy. The implementation uses a structured parsing method to interpret DMARC policies accurately.
Utilizes a detailed policy parsing algorithm to provide actionable insights based on DMARC configurations and their implications.
Offers deeper analysis compared to standard DMARC checkers by evaluating policy effectiveness against existing SPF and DKIM records.
mx record health check
Medium confidenceThis capability checks the health of the MX (Mail Exchange) records for a domain by querying DNS for the MX records and verifying their correctness and availability. It assesses whether the mail servers listed are reachable and properly configured to handle incoming emails. The method includes a connectivity test to ensure that the MX servers are responsive.
Combines DNS querying with a connectivity test to provide a comprehensive assessment of MX record health.
More reliable than basic MX record checkers by including server response verification.
composite deliverability score calculation
Medium confidenceThis capability calculates a composite deliverability score for a domain based on the results of SPF, DKIM, DMARC, and MX record checks. It aggregates these results into a score from 0 to 100, providing a quick reference for the overall email deliverability health of the domain. The scoring algorithm is designed to weigh each factor according to its impact on deliverability.
Employs a unique scoring algorithm that dynamically adjusts weights based on industry best practices for email deliverability.
Provides a more nuanced score compared to generic deliverability tools by incorporating multiple authentication checks.
prioritized fix recommendations
Medium confidenceThis capability generates prioritized recommendations for fixing issues identified during the email deliverability audit. It analyzes the results of SPF, DKIM, DMARC, and MX checks to suggest actionable steps to improve email authentication and deliverability. The recommendations are ranked based on their potential impact and ease of implementation.
Utilizes a decision-tree approach to prioritize recommendations based on severity and implementation complexity, ensuring actionable insights.
More tailored than generic recommendation engines by focusing specifically on email authentication issues.
Capabilities are decomposed by AI analysis. Each maps to specific user intents and improves with match feedback.
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Best For
- ✓email administrators ensuring proper email authentication
- ✓email security professionals validating DKIM configurations
- ✓domain owners looking to enhance email security
- ✓IT professionals managing email infrastructure
- ✓marketers and domain owners monitoring email campaign readiness
- ✓email administrators looking to enhance domain reputation
Known Limitations
- ⚠Only checks SPF records; does not validate individual email addresses or other authentication methods.
- ⚠Requires knowledge of the DKIM selector; does not provide insights on email content.
- ⚠Does not provide real-time monitoring of DMARC reports.
- ⚠Only checks MX records; does not validate the functionality of the mail servers themselves.
- ⚠Score is based solely on technical checks; does not account for content or sending practices.
- ⚠Recommendations are based on technical checks; may not cover all scenarios.
Requirements
Input / Output
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Repository Details
About
Email deliverability audit API for AI agents. Analyze any domain's email authentication: SPF record validation, DKIM selector check, DMARC policy analysis, MX record health, and composite deliverability score 0-100 with prioritized fix recommendations. Tools: email_audit_deliverability. Use this when auditing email infrastructure, diagnosing delivery issues, or checking domain reputation before sending campaigns. IMPORTANT: This checks the DOMAIN's setup — for individual email validation, use email_verify_address instead. Returns: {score, spf, dkim, dmarc, mx, recommendations[]}. No API key required — x402 micropayment $0.005/call on Base L2.
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