How to Give Your AI Agent Its Own Email Inbox
Step-by-step: provision a real email address for your agent, receive messages via webhook, and reply programmatically — in under 5 minutes.
Guide
AgentSend Blog
Guides, tutorials, and insights on building AI agents with email capabilities.
Comparison
AgentSend vs SendGrid vs Resend vs Mailgun
Comparing email APIs for AI agent use cases. See how they stack up for programmatic inboxes, webhooks, and agent-to-human email.
Guide
AI Email API: The Developer's Guide to Programmatic Email for Agents
Build AI agents that send and receive email. A complete guide to using an email API purpose-built for AI agents.
Explainer
What Is an AI Email Agent?
AI email agents read, compose, and respond to emails autonomously. Learn what they are, how they work, and how to build one.
Deep Dive
AI Agent Email Infrastructure: Why Agents Need Their Own Email Stack
Why repurposing SendGrid for your AI agent doesn't work, and what purpose-built agent email infrastructure looks like.
Guide
Free Email API: Best Email APIs for AI Agents & Developers in 2026
Compare the best free email APIs — AgentSend, SendGrid, Resend, Mailgun, and Amazon SES — with a feature matrix for developers.
Guide
Inbound Email API: How to Receive Email Programmatically for AI Agents
How inbound email APIs work, per-inbox webhooks vs domain-level parsing, and code examples for receiving email in AI agents.
Guide
Transactional Email API for AI Agents: Programmatic Email & SDK Guide
What transactional email APIs are, why AI agents need bidirectional programmatic email, and SDK examples in Python and TypeScript.
Comparison
AgentSend vs SendGrid: Which Email API for AI Agents?
SendGrid's domain-level Inbound Parse vs AgentSend's per-agent inboxes. A detailed comparison for agent builders.
Comparison
AgentSend vs Resend: Email API for AI Agent Builders
Resend has great DX for sending, but AI agents need bidirectional email. See how they compare.
Comparison
AgentSend vs Mailgun: Best Email API for AI Agent Email
Mailgun's Routes are flexible, but AI agents need per-agent inboxes and thread management.
Explore Use Cases
See how AI agents use email across industries and workflows.