Email & newsletters

4 SaaS · open-source self-host alternatives in this vertical

Every SaaS in this category, paired with its primary open-source self-host alternative. Each link drills into the full comparison page (license, setup time, monthly cost, migration sketch). Managed-hosting picks for self-hosters: managed Listmonk, Mautic, Postal, Ghost, or self-host SMTP relay.

ConvertKit (Kit) Creator email marketing

Primary self-host alt: Listmonk · knadh/listmonk · AGPL-3.0 · 15min docker-compose (Go binary + Postgres)
Mailchimp Email marketing / newsletters

Primary self-host alt: Listmonk · knadh/listmonk · AGPL-3.0 · 10min docker-compose
SendGrid Transactional email API

Primary self-host alt: Postal · postalserver/postal · MIT · 30min docker-compose (Postal + MariaDB + RabbitMQ)
Substack Newsletter publishing + paid subscriptions

Primary self-host alt: Ghost · TryGhost/Ghost · MIT · 20min docker-compose (Ghost + MySQL + nginx)