mailbox
Mailbox is a lightweight newsletter distribution system built with Golang, designed to run in Docker containers. It provides a complete workflow for creating email campaigns, importing subscribers with group tagging via CSV, and sending HTML or plain text emails through AWS SES. The platform tracks key engagement metrics including open rates and link clicks through a dedicated tracking server. It also supports subscriber management features such as updating records, viewing group statistics, and handling unsubscriptions. The system utilizes standard List-Unsubscribe headers to enable one-click unsubscribing in major mail clients like Gmail and Apple Mail, or manual processing via email notifications. Configuration is managed through environment variables to connect with AWS SES, MariaDB for data persistence, and required web domains for tracking links. The software is distributed as CLI tools with options for dry-run preview modes to test campaigns before actual delivery. It is suitable for developers or admi