How can an AI agent wait for a specific email?
Wait for a new message in an inbox the agent may read, match it to the expected account and sender, and stop after a set timeout.
The right match is more than a six-digit number. Older messages and unrelated senders can contain codes too.
Builders discussing email verification in agent workflows describe polling a mailbox or using a mailbox API. Either way, the agent needs to tell apart the message for this attempt.
Example: waiting for a sign-up message
- Before requesting the email, save the current time and the recipient address.
- Search only messages received after that time. Match the expected sender and subject when the provider gives reliable metadata.
- If there are several candidates, work out which one belongs to the current sign-up. Don't guess from a code alone.
- Take the code or the expected verification link. Keep both out of logs.
- After a reasonable timeout, return a clear "no matching email" result. Check spam, the spelling of the address and the provider's status before requesting another message.
If the mailbox uses a webhook, still handle duplicates and missed deliveries. If it uses polling, respect its rate limits and avoid fetching unrelated mail.
ActAs gives each agent its own inbox, and the agent can wait there for a code from one sender that arrives after a time you set. The guide to 2FA codes has the call.