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I realized just recently that Vivaldi gets revenue from the use of alternative search engines, so I changed my default search to Ecosia on all devices.
We'll see what happens in the future, but I think a few comments on the current view of the Vivaldi repository took place here on the forum.
But I agree with the view of the email on my own domain, I have solved this in the last month. It took several hours to redesign the email address on all services, but it worked. If you want to manage email aliases? I recommend SimpleLogin.