If you want to migrate OLM to Gmail, you can try third-party software like the OLM to Gmail migration tool. The user can use the OLM to Gmail importer application. It can just import the OLM data which will be imported directly into the Gmail account you selected with no errors. You can find more information about the tool here: -[table][tr] [td]
https://www.kdetools.com/mac/olm/gmail/[/td][/tr][/table]
