Our RoundCube installation defaults to having From Addresses
All users of RoundCube Webmail should verify and configure their Identity settings:
RoundCube → Settings → Identities → Your Default Identity
You can create additional identities with different From Addresses (aliases) if you have them or want to send mail as another identity (i.e. Sales Department, etc.)
Select “Address Book” icon and then “Import Contacts” icon. Browse to .vcf file for import.
A work around is to export the contacts to a CSV file then convert that to a .vcf file with this