Email verification: codes or links, and how long does an AI agent wait?

At 61 of 63 products, the sign-up mail reached our agent's inbox within a minute. The median wait was 13 seconds.

The sign-up mail an AI agent gets: how fast, and with what. Arrived within a minute: 61 of 63, Arrived within 10 seconds: 23 of 63, A link only: 34 of 63, A code only: 17 of 63, A code and a link: 12 of 63, Verified without a browser: 9 of 63.

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Drives 1 Oct 2026 to 1 Nov 202663 productsStep Get inSubject Email verificationMarkdown

What we found.

What the sign-up mail carried and how long it took
The mail carriedProductsMedian waitVerified without a browser
A link only34 of 6314 seconds8 of 34
A code only17 of 6311 secondsunder 5
A code and a link12 of 6313 seconds0 of 12
Where our agent finished verification
Where verification finishedProductsShare of the 51
Without a browser9 of 5118%
In a browser39 of 5176%
Stopped at verificationunder 5
All with an outcome recorded51 of 63
  • 23 of the 63 mails came within 10 seconds.
  • A code or a link made little difference to the wait.

What to do.

For product owners

  • Send the verification mail at once, with the code or the link near the top.
  • Let the link verify the account by itself, without a second sign-in in a browser.
  • Accept the code over your API as well as in the sign-up form.

For agent builders

  • Give your agent an inbox on a domain you control, and check it for a minute after sign-up.
  • Have a browser ready for the last step of verification.

Method and limits.

How we tested

  • Drives from 1 Oct 2026 to 1 Nov 2026, 201 products. At 63 of them a sign-up mail with a code or a link reached our agent's inbox and was timed.
  • Our agent signs up with an address on our own domain and reads that inbox itself.
  • Each wait runs from the step that sent the mail to its arrival in the inbox, on the product's newest drive.
  • 12 of the 63 timed mails have no verification outcome recorded, so the table of where verification finished counts the other 51.

Limits

  • Each product's mail as it was on the day of its drive.
  • A product that sent no mail, or a mail without a code or a link, isn't in the count.
  • Medians are shown over 10 products or more, counts from 5.

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