Agent skill

This repo includes an agent skill at:

skills/email-sdk/SKILL.md

Use it when an agent wires Email SDK into an app, reviews adapter setup, or updates these docs.

What it tells agents

• Use bun and bunx.
• Keep adapter credentials in environment variables.
• Import adapters from their own entry points.
• Do not add Nodemailer for SMTP; Email SDK includes its own SMTP transport.
• Use fallbacks only when the backup adapter can send the same class of email.
• Add idempotency keys for externally visible transactional sends.
• Run a narrow validation before calling the work done.

Prompt example

Use the repo-local Email SDK skill at skills/email-sdk/SKILL.md.
Wire Resend as the primary adapter and SMTP as fallback.
Keep secrets in environment variables.
Add one narrow test around the send path.

The skill is short on purpose. It should guide implementation without turning a small email task into a large framework change.