You can securely import OLM email directly into a Gmail account using third party software like Mac OLM to Gmail Migrator. This software migrates OLM directly to Gmail, G Suite, Google Drive, etc. This application manages meta properties of emails such as: B. bcc, cc, subject, date, time, etc. You can migrate certain data according to the date range using the message filtering option.[table][tr] [td]
https://www.kdetools.com/mac/olm/gmail/[/td][/tr][/table]
