"Contact Us" email validation issue #61

Description:
As a user, I can go to the Contact Us page to communicate with the owners.

Actual result:
There is no email validation. If the user enters an invalid email address, they will not get an email validation error. It can be seen in the attachment that when I entered an invalid email address, I did not get any error regarding the invalid email address.

Expected result:
When the user enters an invalid email address, they should get an error like "Email is invalid." or "Please enter a valid email address."

Steps to reproduce:
1- Go to https://www.esproc.com/contact-us/
2- Fill the email address field with an invalid email address

Screenshots: