• SUCCESS
  • FAILURE
  • LOGS
  • HUMAN

How to automate user registration testing with your AI

Connect MailSlurp to your agent to handle the messy parts of signup testing. Your AI manages the temporary email addresses and pulls the verification codes for you.

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Short answer

How can I automate user registration testing with my AI?

Your agent uses MailSlurp to generate unique email addresses for every test run. It then monitors those inboxes to grab verification links or codes, allowing you to complete the signup loop without manual intervention. You get a repeatable way to test your auth flows.

Test outcomes

What your testing produces

The agent handles the email lifecycle, leaving you with these specific results.

SUCCESS

Verified accounts

The agent grabs the verification code and completes the signup. You get a fully registered test user.

FAILURE

Broken flows

The agent fails to find a verification email or the code is invalid. This identifies bugs in your email delivery or registration logic.

LOGS

Email data

The agent pulls the exact content of the verification email. You can review the body or headers to debug formatting issues.

HUMAN

Manual review

If the email never arrives or the signup fails for an unexpected reason, the agent stops. You step in to investigate the specific error.

The workflow

What your AI does when the signup starts.

The agent handles the entire email lifecycle so you don't have to manage dozens of temporary accounts.

  1. Create a test inbox

    The agent generates a fresh, unique email address to use for the registration attempt.

    create_random_inbox

  2. Monitor for the code

    The agent watches the new inbox and waits for the verification email to land.

    wait_for_latest_email

  3. Extract the data

    The agent reads the incoming message to find the specific verification link or OTP code.

    get_email_details

  4. Complete the loop

    The agent uses the extracted information to finish the registration process in your application.

    get_email_details

Try it

Copy these to start.

Use these prompts to kick off your testing tasks.

Starting points

These are starting points. Swap out the specific website or email details to match your test case.

MailSlurp Connector

You're all set. Choose your MCP client and follow the setup instructions.

Connector linkhttps://edge.vinkius.com/vk_preview_vRBUT7cwmQBHCE8gG9ntobAaiC1YlLQ1uk7HJChy/mcp

Claude Desktop

Follow the steps below to connect in seconds.

  1. 1In Claude Desktop, open Settings → Connectors.
  2. 2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
  3. 3Click Add and start a new chat — MailSlurp capabilities are ready to use.
Configuration · claude_desktop_config.jsonCopy
{
  "mcpServers": {
    "mailslurp-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_vRBUT7cwmQBHCE8gG9ntobAaiC1YlLQ1uk7HJChy/mcp"
    }
  }
}
Copy into chat04

  • Create a new MailSlurp inbox and use it to sign up a user on my staging site.

  • Watch the latest email in my MailSlurp inbox and tell me the verification code.

  • Run a registration test on my app using a random MailSlurp email address.

  • Check the details of the last email received in my MailSlurp inbox to find the signup link.

  • Claude
  • ChatGPT
  • Cursor
  • VS Code
  • Windsurf
  • Claude Code
  • JetBrains
  • Cline

Start here

Connect MailSlurp once, then ask.

Just link your MailSlurp account. Your credentials stay encrypted and private, and you can start running tests immediately.

Connect MailSlurp to your AI

FAQ

How this task behaves

  • 01

    Can the AI send emails to these inboxes?

    No. The agent can only create inboxes, wait for incoming mail, and read the details of what arrives.

  • 02

    Does the AI delete the inboxes after testing?

    No. The agent only performs the actions defined by the tools. It does not delete inboxes unless you specifically instruct it to do so through a different process.

  • 03

    Can the AI bypass CAPTCHAs during signup?

    No. The agent handles the email side of the registration. If your site has a CAPTCHA, you will need to handle that part of the flow manually or via other means.

  • 04

    How does the agent know which email to check?

    The agent uses the specific inbox it created during the workflow to ensure it is looking at the right messages.

  • 05

    Can the AI access my personal Gmail account?

    No. The agent only interacts with the inboxes created through the MailSlurp tools.

  • More questions about MailSlurp? See everything the MailSlurp Connector can do

Connect MailSlurp to Claude, Cursor, ChatGPT & more