listmonk

Description

listmonk is an open-source, self-hosted newsletter and mailing-list manager, and an alternative to Mailchimp and Sendinblue. It ships as a single Go binary backed by PostgreSQL, with a modern Vue dashboard for managing lists, subscribers, and campaigns. It is built for scale — millions of subscribers, high-throughput sending — while keeping an idle footprint under 100 MB, and it sends through any SMTP provider so you control deliverability and cost.

Features

• Lists and subscribers: Public and private lists, double opt-in, bulk import/export, and custom attributes (JSON).
• SQL segmentation: Target campaigns with raw SQL expressions over subscriber attributes.
• Campaigns: Rich HTML editor, templating, A/B-friendly scheduling, and per-campaign analytics (opens, clicks, bounces).
• Transactional API: Send templated transactional email over a simple HTTP API.
• Multi-messenger: SMTP and Messenger back-ends, plus bounce processing via mailbox or webhook.
• Single binary: No external dependencies beyond PostgreSQL; official Docker images provided.

Technology Stack

• Go backend
• Vue.js + Buefy dashboard
• PostgreSQL database
• Docker / Docker Compose for deployment

Requirements

• A server with PostgreSQL 12+ (bundled in the sample compose file)
• An SMTP relay or mail server for sending
• Configured SPF, DKIM, and DMARC on the sending domain