How can i make my signup form using api and ajax to direct users to their email for verification?

if i have a simple CRUD API and jQuery-ajax app running to add (post) users (sign up :
name-email ).
How can i make my app while adding new users to direct them to their email in order to verify the signup via a clickable link and that link will confirm the new data (user)?

Any reply, links or hints will be highly appreciated. Thank you very much.
Refo.