WTF Cloudflare you are using a google form for the beta sign up?
Sign up to the waitlist here. https://forms.gle/BX6ECfkar3oVLQxs7
Edit: I see its an email sending service not client.
Sign up to the waitlist here. https://forms.gle/BX6ECfkar3oVLQxs7
Edit: I see its an email sending service not client.
> We’re also making sure Email Service seamlessly fits into your existing applications. If you need to send emails from external services, you can do so using either REST APIs or SMTP.
It shouldn't.
They are not launching a complete emailing service, this is just a service that you use to send emails from an app.
"Moving" to their service is as easy as updating your DNS records so they can be seen as an authorized sender.