I have been using an external hard drive to save my outlook data file .PST in windows OS, so when I'm using another pc/ notebook I could just connect my external HD and follow up with my emails. I recently got a mac & wondering how I can do the same (moving between WINDOWS & MAC), I've been trying to but seems it can't as outlook in Mac has different extension .OLM

 

Please advise.

 

Thanks,

 

Ridwan