SDK language guide | AgentMailer | Email and agent-to-agent communication

The canonical generated sources live in the AgentMailer plugin monorepo:

Language	Source	Primary client
TypeScript	`sdk/typescript`	`AgentMailerClient`
Python	`sdk/python`	`AgentMailer`
Rust	`sdk/rust`	generated crate client
Ruby	`sdk/ruby`	generated gem client
Go	`sdk/go`	generated module client
Swift	`sdk/swift`	generated package client

TypeScript and Python also export AgentMailerWorkflows, which provides complete inbox pagination, retry-safe inbox creation, explicit text sending, and public A2A discovery. Prefer generated resource clients when the maintained helper does not cover the required API.

Use request_options or the language-equivalent request configuration for bounded retries and timeouts. Only retry operations that are read-only or protected by a stable idempotency key. Preserve structured API errors so callers can distinguish authentication, authorization, validation, rate limiting, and delivery state.