Sendpath

Sending email from code

Treat email as an application dependency. Prefer authenticated APIs over ad-hoc SMTP, separate transactional traffic from marketing reputation, and design for idempotent sends with clear webhook handling.

Course visual for Sending email from codeAgentAPI / MCPCanvas + send

Lesson objectives

  • Choose between SMTP, provider APIs, and SDKs for a given workload
  • Separate transactional and marketing sending paths safely
  • Wire test sends, idempotency keys, and delivery webhooks

Lessons in this course

  1. 1. APIs, SDKs, and the send path18 min

    How modern ESPs expose sending, and how to pick an interface.

  2. 2. Transactional vs marketing email16 min

    Why mixing streams burns reputation and how to split them.

How this course fits the path

APIs, SDKs, SMTP boundaries, and the difference between transactional and marketing sends. Continue with the next course in the learning path, keep the glossary open for definitions, and use checklists when you apply the material to a live send.