If Covve is linked to Gmail or Outlook / Exchange
To use your Outlook.com / Hotmail contacts with Covve you can export them from Outlook.com and import them into the address book that you have linked with Covve (gMail or Outlook). These will synchronize with Covve.
To export your contacts from Outlook.com:
1) Navigate to "People"
2) Click on "Manage" and "Export for Outlook.com and other services". The file will automatically be saved on your computer.
Instructions on how to import your contacts can be found:
a) Here for Gmail
b) Here for Exchange/Outlook
c) Here for Office365
If Covve is linked to your iPhone
Alternatively, if Covve is linked to your iPhone you can add your Outlook.com account to your iPhone contacts and this will in turn synchronize them with Covve.