Docs
Every messaging platform has its own rules about what an app may send on your behalf, and most products are vague about them. These are the findings Sentloop was built on, in full, including the parts that are inconvenient.
Getting set up
What the platforms allow
- What every platform allowsGenerated from the same code the app runs on, so it cannot drift from real behaviour.
- Email, and the scope that costs an annual auditWhy Sentloop asks Gmail only for permission to send, and what that choice costs.
- WhatsApp: what Meta actually permitsCoexistence, the two gates on the way to sending, and which of them is ours to open.
- Instagram: the 24-hour reply windowNo app may start an Instagram conversation. What that means for a birthday message.
- iMessage: what Apple does not publishA whole-SDK search for a scheduling API, and what turned up. Apple’s own Send Later cannot do it either.