Do I need a user@mydomain.com email for sending emails using Mailgun?

I am currently using Mailgun for sending emails. I have verified my domain and entered all the records correctly.

I am using laravel which provides an easy way to use mailgun for sending emails.

I have given a MAIL_FROM_ADDRESS as a gmail address eg.

MAIL_FROM_ADDRESS=user@gmail.com
MAIL_TO_ADDRESS=myaccount@gmail.com

But this is not working at all. The Mailgun logs shows email is delivered but no email is received in my gmail inbox at eg. myaccount@gmail.com

So is it because my MAIL_FROM_ADDRESS is a gmail address and not a domain email address?

via Chebli Mohamed