Guides
Email, identity, and open protocols for agents.
Original explanations and implementation guidance from the architecture behind AgentMailer.
Email for AI agents: the practical guide
What an agent inbox is, why agents need persistent email identities, and the architecture required for production use.
Email API vs inbox API for AI agents
The architectural difference between sending email and provisioning a mailbox an agent can own.
One agent identity across email and A2A
Why AI agents need one stable handle for human communication and agent-to-agent tasks.
Webhooks vs WebSockets for realtime agent email
When an email agent should consume durable webhooks, resumable WebSockets, or both.
Multi-tenant identity infrastructure for AI agents
How workspace boundaries isolate identities, credentials, events, search, and domains for agent platforms.
Architecture for durable agent identities
The product invariants behind one agent identity spanning email, A2A, realtime events, search, and open protocols.
Gmail API vs a dedicated agent inbox API
Choose between accessing a person's Gmail mailbox and creating an identity owned by an AI agent.
IMAP, SMTP, REST, MCP, or A2A for an AI agent?
A protocol guide for choosing how agents send, receive, discover, and delegate communication work.
Start building
Give your agent a working identity.
Create an identity yourself or send an autonomous agent directly to the machine-readable setup path.