How to import your contacts to Microsoft 365

First to export your current contacts from your mail client into a .csv or pst format.

Microsoft have a guide for doing this in MS Outlook –http://office.microsoft.com/en-gb/outlook-help/export-contacts-HA101870639.aspx

Once you have this exported, then simply log into your Outlook Web Access athttps://portal.microsoftonline.com

Select people as shown below,

Once in people go to Settings >> Import Contacts

Which will open this screen.

Next select the file you exported earlier and click next.