Notifuse

Self-hosted platform for newsletters, email marketing and transactional email.

BUSL-1.1Source-available (not OSI)

Building on it: what may you do?

Short answers based on the licence, for the version in the catalog.

  • B1 Change the code for internal use in your company Yes, with conditions Usually, for internal use. Check the terms.
  • B2 Build your own product or service on top and offer it to customers as SaaS No Usually no for a service that competes with the vendor, without an agreement.
  • B3 Make a closed-source derivative and sell or distribute it No No, not without an agreement with the vendor.
  • B4 Use the project's name and trademark No No, not without permission. The licence covers the code, not the name or logo.

Keep in mind

  • Contributing back to the project requires signing a Contributor License Agreement (CLA).
  • Dual licensing: the vendor also sells a commercial licence if the terms above don't suit you.
  • There is a licence note for this product (e.g. parts under another licence or version-specific terms): read it and check the licence of the exact version you use.

This is guidance, not legal advice. Check with a lawyer before deciding.

The licence in brief

Business Source License 1.1 (BUSL-1.1)

Source-available, not OSI open source. The project's Additional Use Grant decides; a competing or hosted service is often forbidden. Becomes open on a Change Date.

What does BUSL-1.1 mean?

From v40 BUSL-1.1: production use is allowed, but some features (more than three workspaces, granular permissions, SSO and more) need a licence key. v39 and older are AGPL-3.0.

This is guidance, not legal advice (inte juridisk rådgivning). Check with a lawyer before deciding.

Facts

Licence
BUSL-1.1
Licence type
Source-available (not OSI)
Open core
No
GitHub stars
2.2k
Latest activity
Deployment
Docker
Login/SSO
Unknown
API
Unknown
Multi-tenant
Unknown
EU vendor
Unknown
Source
GitHub API, fetched 2026-10-03

Licence analysis per use case

Sign in to see what the licence means for eight use cases – from internal self-hosting to offering the tool as a service.

Sign in

Alternative to