Sending messages programmatically.
WHAT THEY COVER
Email Text messages Messaging platforms Push notifications
WHAT TO ESTABLISH FIRST
Delivery guarantees, which are weaker than people assume.
WHAT ACCEPTED MEANS
The provider took it, not that it arrived.
WHAT TO USE TO KNOW MORE
Delivery notifications, where offered.
WHAT TO HANDLE
Failures Invalid recipients Rate limits Cost per message
WHY COST MATTERS HERE PARTICULARLY
A defect sending in a loop is expensive within minutes.
WHAT TO BUILD
A sending limit per recipient and per period.
WHY
It bounds the damage of any defect.
WHAT TO RECORD
Every message, its recipient and its outcome.
WHAT TO NEVER DO
Send to real recipients from a test environment.
HOW TO PREVENT IT
Route everything to a capture service outside production.
WHAT TO RESPECT
Consent, and the ability to opt out.
WHY
It is a legal requirement in many places, and a reputational one everywhere.
WHAT MATTERS LOCALLY
Sender identifiers requiring registration Delivery differing markedly between networks Messaging platforms being checked more reliably than email
WHAT TO TEST
Delivery to each network your customers actually use.
WHAT TO MONITOR
Delivery rates, per channel and per network.
