· 10 min read
Email as an agent tool: MCP, the SDK, or your own webhook
There are three ways to give an agent email, and they answer different questions. Install the MCP server and the model sends and reads mail as tool calls it decides to make. Hand it the SDK and email is deterministic code your agent runs. Point a signed webhook at it and the agent receives mail the moment it arrives. This is when to use each — with runnable code for all three, and how to mix them. For developers wiring an agent to email with MailKite.