If you have GSuite you@yourdomain.com is your gmail address. yourdomain.com's MX records will be pointed to Google. This is different to the various techniques

If you have GSuite you@yourdomain.com is your gmail address. yourdomain.com's MX records will be pointed to Google. This is different to the various techniques, such as IMAP/POP and forwarding, used to get them@theirdomain.com email (actually hosted elsewhere) into a theirgoogleacct@gmail.com mailbox