Why managed messaging infrastructure
SendiMessage manages the messaging infrastructure around the API. This page explains what that infrastructure actually is — the parts you'd otherwise build, run, and monitor yourself.
What sits around a messaging API
Sending a message is one HTTP call. Operating messaging is everything around that call:
- Provider integration — accounts, contracts, API differences, and version churn across messaging vendors
- Routing logic — which channel, which country, what happens when the preferred channel isn't available
- Line provisioning — getting numbers that work for your destinations and keeping them healthy
- Delivery-state normalization — each provider reports status differently; your code wants one lifecycle
- Incoming-message handling — replies have to land somewhere, attributed to the right conversation
- Webhook reliability — retries, signatures, and duplicate handling for every event you emit
- Security — credential storage, rotation, audit trails
- Monitoring and support — someone has to notice failures and own the fix
The managed model
SendiMessage provisions dedicated messaging lines for your business and operates the infrastructure above. Your side of the integration is deliberately small: POST /send-message to send, one signed webhook format for everything that happens after, and a support team that already knows your setup.
iMessage delivery is available on supported messaging lines and destinations, with SMS fallback when configured — the routing layer handles that decision per recipient, and reports what actually happened.
When managed is the right fit — and when it isn't
Managed infrastructure fits teams whose product is not messaging: commerce, logistics, healthcare scheduling, SaaS — anywhere messaging is a feature, not the business.
Teams with deep carrier expertise, unusual routing requirements, or messaging as their core competency may be better served integrating providers directly. The comparison pages below lay out both paths honestly.