One Prompt to Give Your OpenClaw Email Access

Published: (February 21, 2026 at 10:14 AM EST)
2 min read
Source: Dev.to

Source: Dev.to

Introduction

Every AI agent builder hits the same wall: “Please verify your email.”
Your agent can browse the web, write code, manage calendars, but it can’t receive a simple verification email.

I built MailCat to fix this, and the setup is just one prompt.

Paste the following into Claude Code, OpenClaw, or any AI agent:

Read https://mailcat.ai/skill.md and set up a MailCat mailbox for yourself. Save the token securely.

Your agent will:

  • Read the skill.md documentation
  • Create a mailbox via the API
  • Save the token securely
  • Check the inbox when needed
  • Extract verification codes automatically

No extra configuration or API keys are required—just tell the AI to read the docs and it handles the rest.

Why It Works

If your AI can read documentation, it can integrate itself. The skill.md is written specifically for AI agents:

  • Clear structure
  • Complete API examples
  • Everything an AI needs to integrate

Features

FeatureDescription
One‑prompt setupAI reads docs and integrates itself
Auto‑extractionCodes and links extracted automatically
1‑hour retentionPerfect for verification flows
Self‑hostableDeploy on your own Cloudflare account
Open sourceMIT licensed

Common Use Cases

  • Autonomous sign‑ups – Agent registers for services automatically.
  • E2E testing – Test email flows in CI/CD pipelines.
  • Newsletter processing – Subscribe and summarize content.
  • Notification monitoring – Watch for alerts and act on them.

Prompt to Use

Read https://mailcat.ai/skill.md and set up a MailCat mailbox for yourself. Save the token securely.

Your agent handles the rest.

  • Website:
  • GitHub:
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