Listmonk

Listmonk is a single-binary, high-performance newsletter manager written in Go. Bring your own SMTP. Excellent for technical operators who want full control.

A SaaS product sends on behalf of its customers, so the deciding factors are tenant isolation, whether suppressions can be scoped rather than global, and whether support can answer why one specific account did not receive one specific email. Lifecycle automation and transactional sending usually need to coexist.

Against trial expiry notices, dunning, onboarding sequences, and per-tenant transactional mail, Listmonk covers event stream, the suppressions API, scheduling, and webhook coverage, and does not cover multi-tenant support. Whether that gap matters depends on how central those are to the build.

• Multi-tenant: No
• Event stream: Yes
• Suppressions API: Yes
• Operating since: Not published
• Scheduling: Yes
• Best published rate per 1,000: Tiers not published in comparable form
• Deliverability: Inherits the deliverability of whichever SMTP relay you point it at.
• Webhooks: Yes
• Starts at: Self-hosted only

Inherits the deliverability of whichever SMTP relay you point it at.

Technical operators who want a self-hosted newsletter platform.