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Commercial support

siphon-smpp is MIT-licensed and free to run in production — no open-core holdbacks, no paid tier of the SMPP engine. If you'd rather not carry the integration and operations alone, commercial support is available from Real Time Telecom B.V., run by the addon's maintainer.

What RTT can help with

  • SMSC design & deployment — sizing and topology for a store-and-forward SMSC, from a single node to an HA pair / N nodes. See Deployment and Kubernetes & scaling for the shape this builds on.
  • Upstream / aggregator integration — getting outbound binds, throttling, DLR correlation and routing working reliably against real aggregators and their quirks.
  • Custom scripting & feature development — Python handlers built to your call flow (routing tables, LCR, store-and-forward queueing, persistence), upstreamed into the project where it makes sense.
  • Bespoke SMS platform builds — higher-level SMS services on top of the commodity SMPP core, delivered as a services engagement.
  • Performance tuning — profiling and capacity planning against your real traffic mix, including free-threaded CPython builds. See Performance.
  • SLA-backed support — production response commitments.

Get in touch via realtime-telecom.nl →

Want a particular feature built or fast-tracked? Feature sponsorship funds work that lands in the open-source project — your use case ships sooner, and everyone downstream benefits. Use the Sponsor button on the GitHub repository, or reach out through RTT to scope it.

Ongoing development is backed by Real Time Telecom B.V., which also provides the smpp34 SMPP codec siphon-smpp is built on.