Enable "Download Messages for Offline Viewing and Searching" to access your mail without internet connection.
Tag: mail
Tip #52
Right-click on a contact in the Contacts Panel and select View All Messages to see all emails they've sent.
Tip #49
Press K, G or M on your keyboard to mark messages in Vivaldi Mail and Feeds as read.
Tip #45
Create a Mailing List from an email address for quick access to all emails from the sender.
Tip #42
Enable threaded view of messages in Vivaldi Mail with a click of a button.
Tip #38
Reorder sections in the Mail Panel to your liking.
Tip #37
Enable Mail, Calendar and Feeds from Settings > General > Productivity Features.