Replicate Inbox onto local pc

In the past, before I am on traveling, I will replicate my Inbox onto my laptop pc. It allows me to do the emailing during traveling and change back to online when I arrive at destination. Once I upgraded to R 8.5.1, the replication did not work as previously. I guess the operating procedure has been changed. Can someone advise me how to operate replication on R 8.5.1.

Thanks,

Scott