PSTtoOFFICE365

There are various 3rd party tools available in the market. Any of these should work - 

 

1. Transend

 

https://www.transend.com/migration/easily-migrate-from-pst-to-office-365/?src=pst%20to%20office%20365%20migration%20tool&gclid=Cj0KCQjws5HlBRDIARIsAOomqA0t_JCb3tlEmYvnuLcEnB1C6F6N3p9Al1B3m6qCte6A5aVAGaVfV00aAnd2EALw_wcB

 

2. MailsDaddy

 

http://www.mailsdaddy.com/pst-to-office-365-migration-tool/

 

If you wish to try the MSDN recommended approach, this will help 

https://docs.microsoft.com/en-us/office365/securitycompliance/importing-pst-files-to-office-365