I need to restrict the end user to access the form which i was creating, by setting only particular maid id which can be able to access. for example only user1 @ gmail.com, user2@gmail.com can only access the form and not any others

Hey there. Currently the only wait to do this is to start your form with an email input as the only block of the first page. You can them add custom validation to this block

https://help.opnform.com/en/article/how-to-add-custom-validation-to-a-field-elzuxy/ to validate the email entered and make sure that it’s the email you expected - or has the right format. The form will be blocked on this page until your criteria is met :)

Feel free to reach out via the live chat if you need help.