happyDeliver

An open-source email deliverability testing platform that analyzes test emails and provides detailed deliverability reports with scoring.

Features

• Complete Email Analysis: Analyzes SPF, DKIM, DMARC, BIMI, ARC, SpamAssassin scores, DNS records, blacklist status, content quality, and more
• REST API: Full-featured API for creating tests and retrieving reports
• LMTP Server: Built-in LMTP server for seamless MTA integration
• Scoring System: Gives A to F grades and scoring with weighted factors across dns, authentication, spam, blacklists, content, and headers
• Database Storage: SQLite or PostgreSQL support
• Configurable: via environment or config file for all settings