The simple way to import Outlook OST to G-Suite/ Google Workspace is by using the eSoftTools OST Recovery software. This tool convert all file into Gmail account including email properties- inbox, contact, calendar, sent-items ,task, notes, contacts, calendar, etc. it has many various format to import OST file into PST, EML, MSG, MBOX, vCal, vCard, HTML, Outlook 365 etc. If you have bulk of email data and wants to select any one file so you can use Advanced Email filter option to filter selected list.
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stella ost to pst recovery software is the best software to recover all ost file data in to pst file this software is recover all corrupted and unmounted ost mailbox items in to pst file this software is support all version 32bit and 64bit ost file this software is recover all ost items like emails, contacts, calendars, task, notes and many other items in to pst file. for more info visit this link https://www.stelladatarecovery.com/ost-to-pst-converter.html