When I go on Go Daddy the oldest email was received on October 2019 and thats what migrated including other folders which does have some old emails but not what he wants. he has been in the company since day one and said that he should have emails since 2011.
when we moved to Office 365 I checked that all his emails and he only had about 500 emails. he also says that when he set up his Mac, he used the company email for his iCloud account and thats why all his emails are in the cloud. they say that when we were on Go Daddy, all their emails were send to the cloud. Everyone in the company seems to be happy with their emails. Recently I migrated the company's email from Go Daddy to Office 365.