We have created an email address and when I try to send an email, I received this error message :
550 5.1.1 The email account that you tried to reach does not exist. Please try double-checking the recipient's email address for typos or unnecessary spaces. Learn more at https://support.google.com/mail/?p=NoSuchUser n11sor23441014ejs.38 - gsmtp
We are 100% certain that the recipient's mail is ok.