Emails getting sent to spam with phishing warning.

Hello Sayan, thanks for the amazing work with this plugin!

I want your help with this issue:
When I get emails from the payment step with the UPI payment link, it gets sent to spam and google is marking as a potential phishing attempt. It says it couldn’t verify if the email was coming from google [the from email ID is a Gmail ID].

Can you tell me why this is happening?

Thanks in advance!
– Achyuth.