Field notes

Notes on email for AI agents.

Guides, integration patterns, and infrastructure thinking for teams building AI products that live in email.

27 posts · calendar, deliverability, webhooks, threading & integrations

Security 02

Your Agent's Inbox Is an Attack Surface

Anyone can email your agent, and some of them will write to the model. One malicious email, what the scanner returns for it, how to wire a guardrail so the API refuses what the attacker asked for, and an honest comparison with AgentMail and Mails.ai.

September 2026 · 8 min
AI Agents 03

An Agent With a Wallet Can Now Get an Inbox in One HTTP Round Trip

Priced routes now answer 402. Pay with USDC over x402 or a Stripe card over MPP, retry, and get an inbox plus an API key. The real headers, why 402 is the agent-native auth, and how it compares to AgentMail.

September 2026 · 8 min
AI Agents 04

Your Agent Already Has an Email Address. Now It Has a Login.

Sign in with Dead Simple is a free OpenID Connect provider where the identity is an agent's inbox. Why the inbox is the right anchor, how owner_verified keeps operators accountable, and an Auth.js plus Python walkthrough.

September 2026 · 9 min
Integration Guide 05

How to Give Meta Muse Its Own Email Address

Meta's Muse agent builds its own connectors. Hand it one key and a brief, and it owns an inbox in five minutes. Plus why the Gmail connector can't finish a signup, and the guardrails to set first.

September 2026 · 10 min
Integration Guide 06

How to Give Grok Bot Its Own Email Inbox

xAI's Grok Bot gets a cloud computer, plugins, and no email address of its own. Two fixes: one grok mcp add command, or a grok-4.6 function-calling loop with working code.

Bridget · August 2026 · 13 min
Guide 07

MCP OAuth Explained: Agent Email Without API Keys

How OAuth 2.1 works in MCP: the 401 challenge, discovery, dynamic client registration, and PKCE, shown with real payloads from a live email MCP server.

Bridget · August 2026 · 12 min
Industry 08

AI Agent Email Deliverability: Gmail's 2026 DMARC Crackdown

Gmail now rejects unauthenticated mail at SMTP. Here's how to keep your AI agent's email out of spam in 2026 — DMARC, DKIM, complaint rate, and dedicated IPs.

Bridget · June 2026 · 11 min
AI Agents 09

Every Agent Needs an Inbox. Dead Simple Email Gives Them One.

There will soon be more AI agents than people, and every one needs an email address. Why human email platforms can't serve them, and what an agent inbox costs in 2026.

Bridget · August 2026 · 12 min
AI Agents 10

How AI Agents Receive Email Verification Codes and OTPs

AI agents hit an email verification wall when they sign up for services. Here's how they receive OTPs, 2FA codes, and magic links automatically — with one API call.

Bridget · July 2026 · 10 min
Industry 11

AI Agents Can Now Take Orders Through Chat. Can They Follow Up By Email?

Square, OpenAI, and Stripe moved checkout into the chat window in 2026. But the receipt, the shipping update, and the support reply still run on email — and most agents have no inbox.

Bridget · July 2026 · 12 min
Industry 12

$206 Billion in Agent Spend and Almost No One's Budgeting for Email

Gartner puts 2026 AI agent software spend near $206B, up ~139%. Almost all of it goes to compute and orchestration. Email — how agents reach the world — is on no line item.

Bridget · June 2026 · 11 min
Guide 13

Why 'Agent Identity' Has to Include Email

The 2026 agent-identity stack solved auth and permissions but skipped the inbox. An agent borrowing a human's Gmail isn't identity — it's a liability. Here's the fix.

Bridget · June 2026 · 13 min
AI Agents 14

Email as Memory: Long-Running AI Agents in 2026

Long-running agents need persistent memory. Email — with threading, addressability, and IMAP search — is the cheapest, most durable agent memory store you can buy.

Bridget · June 2026 · 12 min
Guide 15

Email Threading for AI Agents: Message-ID, In-Reply-To, References

How AI agents thread email replies correctly using Message-ID, In-Reply-To, and References headers — the rules, the edge cases, and what breaks when you get it wrong.

Bridget · June 2026 · 10 min
Integration Guide 16

How to Give Hermes Agent Email Using Dead Simple

Hermes Agent is Nous Research's open-source self-improving AI agent. Here's how to wire it up to Dead Simple Email's MCP server in about three minutes.

Bridget · April 2026 · 12 min
Guide 17

How MCP Is Changing How AI Agents Use Email

Model Context Protocol lets any AI client — Claude, Cursor, ChatGPT, Gemini — drive email through one standard interface. Here's how to plug in Dead Simple's MCP server.

Bridget · April 2026 · 12 min
Guide 18

Complete Cost Comparison: Email APIs for AI Agents in 2026

Side-by-side pricing and feature comparison of every email API option for AI agents: Dead Simple, AgentMail, SendGrid, Postmark, Mailgun, SES, Resend, and Nylas.

Bridget · April 2026 · 14 min
AI Agents 19

Gmail Is Suspending AI Agent Accounts — Here's What to Do

Gmail's TOS prohibits bot access and suspends AI agent accounts without warning. Here's why it happens, why workarounds fail, and how to migrate.

Bridget · March 2026 · 8 min
Tutorial 20

How to Give Your AI Agent Its Own Email Inbox in 5 Minutes

Step-by-step: create an inbox, send email, receive via webhooks, and connect via MCP. No DNS setup required.

Bridget · March 2026 · 6 min
Tutorial 21

Automate Customer Onboarding with AI Email Agents

Build an AI agent that welcomes new users, sends setup guides, and follows up automatically — all through the Dead Simple Email API.

Bridget · March 2026 · 8 min
AI Agents 22

Why AI Agents Need Their Own Email Addresses

As AI agents move from chatbots to autonomous workers, they need real communication channels. Here's why email is the missing piece.

Bridget · March 2026 · 6 min
Tutorial 23

Getting Started with Dead Simple Email

From API key to sending your first email in under 5 minutes. A step-by-step guide for developers.

Bridget · March 2026 · 4 min
Infrastructure 24

Email Infrastructure for AI Agents, Explained

SPF, DKIM, DMARC, MX records — the plumbing that makes email work. A no-nonsense guide for developers who'd rather not think about it.

Bridget · March 2026 · 8 min
Webhooks 25

Real-Time Email Webhooks: The Key to Responsive AI Agents

Polling is dead. Learn how webhook-driven email delivery lets your AI agents react to incoming messages in milliseconds.

Bridget · March 2026 · 5 min
Integration Guide 26

How to Give Your OpenClaw Agent Email with Dead Simple Email

Build a custom MCP server that gives your OpenClaw agent full email capabilities — create inboxes, send and receive messages, and automate workflows.

Bridget · March 2026 · 12 min
Integration Guide 27

Email for AI Agent Teams: Using Dead Simple Email with Paperclip

Give each agent in your Paperclip org its own email identity. Route incoming messages to the right agent, automate replies, and coordinate multi-agent email workflows.

Bridget · March 2026 · 12 min

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