Palumb
Palumb: Code-defined workflows with retries and self-hosting, using your own sending providers. Ranked #14 of 15 in Notification Infrastructure Software by our editors (7.1/10); pricing: Free plan; best for developers needing durable, self-hostable workflows.
At a glance
- Editor score7.1 / 10
- PricingFree plan
- Best forDevelopers needing durable, self-hostable workflows
- Free planYes
- Paid fromFree
- Workflow builderYes
- Facts checked24 Sep 2026
Where it wins
- Waits for events or delays across crashes and deployments
- Retries with backoff and duplicate-send protection
- Offers SDKs for TypeScript, PHP, .NET, Python, Go, Java, and Rust
Where it doesn't
- Sending depends on customer-provided providers and credentials
- Workflow logic is defined in code rather than only through a dashboard
- Self-hosting requires the application, Restate, and PostgreSQL
Our verdict on Palumb
Palumb gives developers a way to define notification workflows in code, with a managed cloud option or a self-hosted stack. It is aimed at teams that want notification logic in their own codebase and need workflows to wait for events or delays, collect events into digests, and fan out messages to topic subscribers. Its SDKs cover TypeScript, PHP, .NET, Python, Go, Java, and Rust, while dashboard, REST API, and MCP server access provide additional ways to interact with the service.
Durability and delivery controls are central to the product. Workflows can wait across crashes and deployments; retries use backoff, and duplicate-send protection reuses the same Message-ID. Palumb also records accepted, failed, and bounced delivery outcomes. Documented channels include email, SMS, Telegram, Slack, and push, and event collection windows support digest notifications. These features make it relevant to teams with event-driven notification logic, rather than only straightforward one-off sends.
Palumb sends through providers and credentials supplied by the customer, so teams need to bring their own sending setup. The ongoing beta is free, and the published description says it has no end date. Teams can choose managed cloud or self-hosting; the self-hosted stack uses the application, Restate, and PostgreSQL, and the delivery path is published under AGPL-3.0. Palumb is a fit for developers who value code-defined, durable workflows and want deployment choice. Teams seeking provider-supplied sending capacity or a workflow setup that does not rely on code should consider a different approach.
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Palumb pricing
Palumb fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Channels supported | Email, SMS, Telegram, Slack, push |
| Delivery controls | Retries with backoff; duplicate-send protection; event waits and timeouts; event collection windows |
| Provider options | Bring_your_own |
| Workflow builder | Yes |
| Included monthly volume | Not verified |
| SDK languages | TypeScript, PHP, .NET, Python, Go, Java, Rust |
| Deployment | Cloud, Self-hosted, Browser extension |
| Platforms | Web |
| Compliance & security | GDPR |
| Built for | Small business, Mid-market (editorial estimate) |
| Pricing | Free plan |
| Website | palumb.com |
| Facts checked | 24 Sep 2026 |
Alternatives to Palumb
- Firebase Cloud MessagingFree push infrastructure with broad targeting across web and mobile.9.0
- CourierA flexible notification layer for teams that need orchestrated, multi-channel delivery.8.9
- OneSignalMulti-channel messaging with visual journeys, behavioral triggers, and usage-based pricing.8.9
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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