Self-hosted newsletter & mailing list manager
Manage millions of subscribers across many single and double opt-in lists with custom JSON attributes for each subscriber. Query and segment subscribers with SQL expressions.
Use the super fast bulk importer (10k records per second) or use HTTP/JSON APIs or interact with the simple table schema to integrate external CRMs and subscriber databases.
More than just e-mail campaigns. Connect messenger web services and send SMS, Whatsapp, FCM notifications, or any type of arbitrary messages with simple webhooks.
Create powerful, dynamic e-mail templates with the Go templating language. Use template expressions, logic, and 100+ functions in subject lines and content. Write HTML e-mails in a WYSIWYG editor, Markdown, raw syntax-highlighted HTML, or just plain text.
Highly configurable multi-threaded, high throughput multi-SMTP e-mail queues for super fast campaign delivery. Throughput and sliding window rate limiting for fine grained speed controls. Single binary application with nominal CPU and memory footprint that runs everywhere. The only dependency is a Postgres database.
