Hi Gonçalo,

The email is registered on the User entity so you just need to make a query to get the email of the user.

If your user is already logged in, you can apply the filter User.Id = GetUserId() (GetUserId() is a function that returns the user id logged-in).

If your user has not logged-in yet and you have just the username, for instance, your filter on the query should filter by the username.

Regards,
João

hi Goncalo

Yes we can send an email to the user on registration.You can refer to below link to send an email to required email address

https://success.outsystems.com/Documentation/11/Developing_an_Application/Implement_Application_Logic/Send_an_Email_From_a_Web_Application

Hope it helps

Regards,

Shilpa Uppund

Hi,

When you enter email id you can check or filter this email id in user entity .

like

 and based on return data you can check email is register or not.

Hope this will help you.

Regards

Rahul