I have a client who's having me move his website to a new host. His email accounts are on G Suite and have his domain after the @, but were originally created through Wix when he had a Wix website. I'm able to access his email via an IMAP configuration on my email client (which happens to be Thunderbird) using gmail's mail server, imap.gmail.com.
It appears to me that his email has nothing to do with Wix. However, he still has a Wix account that lists his email addresses as associated with the account.
I'm now about to change his domain's name servers at his registrar (which is not Wix) to point the domain to the new host. Does it sound like I'm correct in assuming that his email, which has his domain after the @ sign, will be completely unaffected by this?