If you want to choose the right way to import OLM to Gmail, you can use the efficient tool KDETools OLM to Gmail Migration Tool. This software also supports multiple file formats like EML, EMLX, HTML, MBOX, PDF, NSF etc. The application allows the user to migrate the oversized OLM files to Gmail without any data loss.[table][tr] [td]
https://www.kdetools.com/olm/gmail/[/td][/tr][/table]