E-mail: How can I restrict user by email domain

I want only one domain user to fill my form. and form automatically logs responders email address in my liked GDOC.

You can restrict users to enter only one domain by setting conditional logic.

I have added an e-mail field to my sample form and set this condition in the below:

Users will not submit the form unless they enter an e-mail with gmail.com extension in my sample form.

Smart Forms Using Conditional Logic

You can try this out. Let us know if you need any further assistance.

I dont want my users to enter email in the form. I want them to login through their gmail account and then system will record their gmail ID automatically.

We can not provide such feature. Also, you want to collect e-mails without permission of people who fill your form. This is not an appropriate way to collect e-mail address data.

If you have any other questions, let us know.