Add Calendar, calDAV and cardDAV
I would like Vivaldi to include a calendar, such as Mozilla Thunderbird calendar (Lightning/Sunbird), that can use multiple calendars, but with the addition of being able to specify the timezone.
CALDAV and CARDDAV for Calendar and Addressbook is planned.
But the internal work on browser and mail client has a higher priority.
I'm using owncloud and it's nice to have your OWN CLOUD!