Email Deliverability Audit — SPF/DKIM/DMARC Check vs PostHog

This 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.

Unique: Utilizes a high-performance DNS resolver optimized for quick SPF record lookups, ensuring minimal latency.

vs alternatives: More efficient than traditional SPF checkers due to its optimized DNS querying mechanism.

This 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.

Unique: Incorporates a systematic approach to validate DKIM selectors, ensuring comprehensive checks against multiple selectors if specified.

vs alternatives: More thorough than basic DKIM checkers by allowing multiple selector validations in a single query.

This 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.

Unique: Utilizes a detailed policy parsing algorithm to provide actionable insights based on DMARC configurations and their implications.

vs alternatives: Offers deeper analysis compared to standard DMARC checkers by evaluating policy effectiveness against existing SPF and DKIM records.

This 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.

Unique: Combines DNS querying with a connectivity test to provide a comprehensive assessment of MX record health.

vs alternatives: More reliable than basic MX record checkers by including server response verification.

This 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.

Unique: Employs a unique scoring algorithm that dynamically adjusts weights based on industry best practices for email deliverability.

vs alternatives: Provides a more nuanced score compared to generic deliverability tools by incorporating multiple authentication checks.

This 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.

Unique: Utilizes a decision-tree approach to prioritize recommendations based on severity and implementation complexity, ensuring actionable insights.

vs alternatives: More tailored than generic recommendation engines by focusing specifically on email authentication issues.

PostHog/posthog | DeepWiki Loading... Index your code with Devin DeepWiki DeepWiki PostHog/posthog Index your code with Devin Edit Wiki Share Loading... Last indexed: 28 May 2026 ( 4a5e38 ) Overview Monorepo Structure and Build System Frontend Workspace and Product Packages Python Dependencies and Configuration CI/CD Pipeline Schema and Type System Cross-Language Schema Synchronization Query Schema Definitions Database Migrations Data Storage and Ingestion ClickHouse Architecture Kafka to ClickHouse Pipeline PostgreSQL and Database Pools Query Log Archive System Event Ingestion Pipeline (Node.js) Backend Services Django Middleware System Feature Flags Service (Rust) API Layer and Authentication Rust Microservices LLM Gateway Service Agentic Provisioning and OAuth Max AI Assistant Architecture and Agent Modes Query Execution and Streaming Frontend Integration MCP Server Tasks (AI Coding Agent) Feature Flags System Feature Flag Management API Flag Evaluation and Dependencies Frontend Interface Product Features Logs Viewer Session Recordings Insights and Analytics Surveys and Scheduled Changes Experiments (A/B Testing) Web Analytics Error Tracking LLM Analytics Frontend Architecture Kea State Management Product Module System Build System and Tooling Testing and Quality Test Infrastructure Backend and Rust Tests Frontend and E2E Tests Data Platform and Workf

Monorepo Structure and Build System | PostHog/posthog | DeepWiki Loading... Index your code with Devin DeepWiki DeepWiki PostHog/posthog Index your code with Devin Edit Wiki Share Loading... Last indexed: 28 May 2026 ( 4a5e38 ) Overview Monorepo Structure and Build System Frontend Workspace and Product Packages Python Dependencies and Configuration CI/CD Pipeline Schema and Type System Cross-Language Schema Synchronization Query Schema Definitions Database Migrations Data Storage and Ingestion ClickHouse Architecture Kafka to ClickHouse Pipeline PostgreSQL and Database Pools Query Log Archive System Event Ingestion Pipeline (Node.js) Backend Services Django Middleware System Feature Flags Service (Rust) API Layer and Authentication Rust Microservices LLM Gateway Service Agentic Provisioning and OAuth Max AI Assistant Architecture and Agent Modes Query Execution and Streaming Frontend Integration MCP Server Tasks (AI Coding Agent) Feature Flags System Feature Flag Management API Flag Evaluation and Dependencies Frontend Interface Product Features Logs Viewer Session Recordings Insights and Analytics Surveys and Scheduled Changes Experiments (A/B Testing) Web Analytics Error Tracking LLM Analytics Frontend Architecture Kea State Management Product Module System Build System and Tooling Testing and Quality Test Infrastructure Backend and Rust Tests Frontend a

Schema and Type System | PostHog/posthog | DeepWiki Loading... Index your code with Devin DeepWiki DeepWiki PostHog/posthog Index your code with Devin Edit Wiki Share Loading... Last indexed: 28 May 2026 ( 4a5e38 ) Overview Monorepo Structure and Build System Frontend Workspace and Product Packages Python Dependencies and Configuration CI/CD Pipeline Schema and Type System Cross-Language Schema Synchronization Query Schema Definitions Database Migrations Data Storage and Ingestion ClickHouse Architecture Kafka to ClickHouse Pipeline PostgreSQL and Database Pools Query Log Archive System Event Ingestion Pipeline (Node.js) Backend Services Django Middleware System Feature Flags Service (Rust) API Layer and Authentication Rust Microservices LLM Gateway Service Agentic Provisioning and OAuth Max AI Assistant Architecture and Agent Modes Query Execution and Streaming Frontend Integration MCP Server Tasks (AI Coding Agent) Feature Flags System Feature Flag Management API Flag Evaluation and Dependencies Frontend Interface Product Features Logs Viewer Session Recordings Insights and Analytics Surveys and Scheduled Changes Experiments (A/B Testing) Web Analytics Error Tracking LLM Analytics Frontend Architecture Kea State Management Product Module System Build System and Tooling Testing and Quality Test Infrastructure Backend and Rust Tests Frontend and E2E Tests

PostHog/posthog | DeepWiki Loading... Index your code with Devin DeepWiki DeepWiki PostHog/posthog Index your code with Devin Edit Wiki Share Loading... Last indexed: 28 May 2026 ( 4a5e38 ) Overview Monorepo Structure and Build System Frontend Workspace and Product Packages Python Dependencies and Configuration CI/CD Pipeline Schema and Type System Cross-Language Schema Synchronization Query Schema Definitions Database Migrations Data Storage and Ingestion ClickHouse Architecture Kafka to ClickHouse Pipeline PostgreSQL and Database Pools Query Log Archive System Event Ingestion Pipeline (Node.js) Backend Services Django Middleware System Feature Flags Service (Rust) API Layer and Authentication Rust Microservices LLM Gateway Service Agentic Provisioning and OAuth Max AI Assistant Architecture and Agent Modes Query Execution and Streaming Frontend Integration MCP Server Tasks (AI Coding Agent) Feature Flags System Feature Flag Management API Flag Evaluation and Dependencies Frontend Interface Product Features Logs Viewer Session Recordings Insights and Analytics Surveys and Scheduled Ch