Adding email validation

[Amruta7203]

Is your feature request related to a problem? Please describe.
Adding email validation in the contact form for checking only approved domains like .com, .in, etc

Describe the solution you'd like
A clear and concise description of what you want to happen.

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
Add any other context or screenshots about the feature request here.

What problem is this feature trying to solve?

How do we know when the feature is complete?