Automatically deny notification requests
It's becoming bloody annoying.
If you mean HTML5 notifications, I can offer the following advice:
You can disable them completely on a per-site basis by clicking the symbol next to the address in the addess bar.
You can also disable them globally by going to chrome://settings/content/notifications. Unfortunately, I dont think that setting is fully untegrated into vivaldi options, but you can still manage it on the chrome settings page.
@HaaEnn chrome://settings/content and then scroll down to Notifications, and toggle the switch from "ask..." to "block."
Thanks. I was looking for that.