Hmm, I keep receiving emails informing I've got a son of a gun tax return, from IRS, in American English.
Good to know I got tax return from IRS... I'm not even US citizen... what a nice people.
All Email provider already have a way or another to circumvent that. And if you the type who create own Email server, there's plenty of software to rate limit or block incoming mail.
The only "email bombing" I got are from Pinterest & Twitter. I keep forgetting to set their email limit.
Exclude them, my main email is ZERO entry. I archived important emails somewhere else immediately.
I think, Vivaldi development just really really choosy for who is who and for what. If nobody knows you or worst you can't provide who are you really are then bye bye.
You could grab Vivaldi source from https://vivaldi.com/source/. Tweaks it to the dead, show your works to the devs. Ignore it's outdated, it's needed to judge your ability. If you're accepted as part of devs community, sign here & there.
The closest story, that's what a user who enhances Vivaldi Windows/Tabs opening/closing speed done a year ago.
Who's his username? I forgot again lol (yeah I know, cursed me).
As nice as it would be to have FOSS everything, more important is how the company is run. FOSS doesn't mean squat if the company doesn't really believe in it. Look at android. Technically, it's FOSS, but Google treats in a very closed manner and tracks the users to the N-th degree.
Vivaldi on the other hand isn't FOSS, other than making attempts to open source (open tech like html, js + making some of the source available). But more importantly it listens to users and treats them right, and I think I value that a lot more.
I think ads (in the form we know them) have had their day. I see an increase in the use of affiliate links, subscription/donation methods, and sponsored content these days and I think this coupled with the use of ad blockers is scaring the businesses whose sole purpose is just to put ads on pages and get clicks.
Very old news, but all you can do is close your Yahoo accounts, links and search functions.
Webmasters blocking Yahoo IP ranges is pointless as the email service which "had" the rootkit does not browse websites.
It only affects people with Yahoo IDs that connect in to it. It does not work the other way round.
Yahoo is now owned by another company (https://verizon.yahoo.com), who if upholding the pre-existing deal with the NSA, are likely to also be doing it with all their other communication.
In which case now you need to block all Verizon, Yahoo and AOL IPs.
In the real world, millions of people are forced to use Yahoo because it is what their ISP has given them. British Telecom are the biggest UK ISP and have used Yahoo for many years, meaning that most of the UK has a Yahoo account they are forced to keep even if they don't use.