Vivaldi is a web browser. 

Vivaldi is also a calendar.

Recommends

The best online collaboration tools

Teams need tools to help them collaborate and stay productive while remotely working. Here's our top picks.

It's also an RSS feed reader.

And now, it's also an email client.

That's right, the developers of the Vivaldi web browser have integrated a full-blown email client, so you don't have to either deal with web-based clients or work with yet another application window on your desktop.

As to the Vivaldi Mail features, it includes such things as:

• IMAP, POP3, Gmail, iCloud, and Outlook support
• Labels, filters, and a powerful search tool
• Unseen/unread counters
• Custom keyboard shortcuts
• Integrated Feed reader
• Show/hide read email, mailing lists, custom folders, feed, junk, and trash
• Save searches
• Message queuing and batch sending
• Invite management with Vivaldi Calendar integration

According to Jon von Tetzchner, CEO of Vivaldi, "Vivaldi Mail is an ode to the original, simple, and reliable form of communication." Tetzchner adds, "Email can at times be chaotic and messy, but Vivaldi Mail is the partner you need to get the job done