Plunk replaces 7 paid apps
One open-source tool, 7 subscriptions it can stand in for. Each pairing below is curated and verified by hand, with the honest catch spelled out. No votes, no pay-to-list.
licenseAGPL-3.0
runsyour machine or their cloud
installHosted signup, or the official Docker Compose stack
dataThe self-hosted stack stores core data in PostgreSQL, jobs and cache in Redis, and objects in MinIO; hosted data is kept in Plunk's EU infrastructure.
setupHosted use still needs domain authentication; self-hosting adds PostgreSQL, Redis, MinIO, Nginx or another proxy, exposed web and SMTP services, DNS, and ongoing deliverability work.
facts verified 2026-08-10
Marketing, email transaccional y flujos de trabajo desde una sola app autoalojada; hay menos plantillas específicas para SaaS.
the catchPlunk covers the same broad messaging modes, but it has fewer SaaS-specific templates and integrations and asks you to own the sending and operational stack.
the verdict →all Loops alternatives →
Un pequeño flujo de eventos puede impulsar flujos de correo condicionales; los paneles de ecommerce no aparecen solo por desearlo.
the catchPlunk can drive conditional email from a small event stream, but it lacks Drip's ecommerce dashboards, product-aware templates, and native store plumbing.
the verdict →all Drip alternatives →
Campañas, correo transaccional y flujos de trabajo juntos; la profundidad del CRM de audiencia es menor.
the catchPlunk's audience CRM, template ecosystem, campaign analytics, and non-technical marketing workflow are noticeably thinner than Mailchimp's.
the verdict →all Mailchimp alternatives →
Campañas, correo transaccional y flujos de trabajo en un solo contenedor; el proveedor de envío todavía envía la factura.
the catchPlunk is developer-first and much thinner in visual audience management, CRM depth, segmentation tooling, and marketer-oriented reporting.
the verdict →all ActiveCampaign alternatives →
Correo transaccional y de campaña con flujos de trabajo; el autoalojamiento es gratis, el envío no es magia.
the catchPlunk handles both transactional and campaign email, but self-hosting its multi-service stack and configuring SES is much less turnkey than Brevo's managed sending and compliance workflow.
the verdict →all Brevo alternatives →
Eventos, condiciones y correo automatizado en una plataforma abierta; las analíticas son más simples que las de Bento.
the catchPlunk can react to events and run conditional email workflows, but its behavioral analytics and segmentation are substantially leaner than Bento's.
the verdict →all Bento alternatives →
La misma estructura de campaña más transaccional con automatización de flujos de trabajo; Docker es la suscripción.
the catchPlunk combines campaigns, transactional email, and workflows, but its self-hosted stack and mandatory external sender are substantially less turnkey than Mailcoach Cloud.
the verdict →all Mailcoach Cloud alternatives →last updated 2026-08-10 · up to $1,584/yr replaced · no votes, no pay-to-list
