Email sending issue

I’m using contact form 7 for contact inquiry and in that, the email is not received to the Gmail account. The same contact form email is delivered to Yahoo and another email platform. I’m having the email sending issue in Gmail only. Can you please guide me on the same what is the problem regarding the Gmail service? How can I check with the server itself? Also, I’m not using any SMTP plugin as I have already checking using the plugin but no luck.

Kindly help with this asap. Thank you!