Either one works. You need at least one, and you can give both.
What the form asks
Your name comes first. Then it says, "How can we reach you? Phone or email. Either one works." The phone number field is first and the email is second.
If you give an email
We send an email with a button. Tap Confirm my spot to finish. Nothing is confirmed until you tap it. See I joined the waitlist but got no email.
If you give a phone number
There is nothing to confirm yet. You can type a US number in any common way, such as 555-234-5678 or (555) 234-5678. For another country, start with + and the country code.
What is different
An email has a link in every message to unsubscribe. A phone number does not have an email link. See How do I leave the waitlist?
Giving both
If you give both, the email confirmation runs and the phone goes on the same entry.
