Application intent becomes one durable request.
Send transactional, scheduled, or batch messages through the same idempotent contract.
Read the specification// 01 / THE PROTOCOLThe complete
The complete
message lifecycle.
One deliberate interface for sending, understanding, trusting, and receiving product email.
// 02 / ONE SYSTEMFour surfaces.
Four surfaces.
One message identity.
The interface changes with the job. The underlying message record does not.
const message = await posta.emails.send({
from: "Product <hello@acme.dev>",
to: "maya@northstar.dev",
template: "workspace-ready",
idempotencyKey: "welcome/user_482"
});A route that can be read after it runs.
01Request validated
201 Created02Policy appliedquota + suppression03Transport acceptedemail.sent04Provider event receiveddelivery / engagement05Webhook attempted1 of 5