Tror inte det går på gmail.com, men om du använder Outlook mot Gmail IMAP så kan du ställa in att bara ta emot mail när du klickar på sync manuellt.
EDIT: Kolla https://www.makeuseof.com/tag/firefox-gmail-extensions/
9. DNDEmail: Stop Incoming Messages From Distracting You
A notification of a new email can be a distraction. You stop what you’re doing to check the message, which can be unimportant. But that small switch ends up causing a major shift in your workflow, breaking your concentration. It’s a good practice to turn off distracting tech notifications to be more productive.
How To Turn Off Distracting Tech Notifications Almost Anywhere
How To Turn Off Distracting Tech Notifications Almost Anywhere These days, we're constantly barraged with email updates, system alerts, and annoying texts from hypothetical neighbors named Brad about how he got his pet chinchilla stuck in the dryer vent again. But for some reason,...
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DNDEmail stops Gmail from showing new emails to you for set periods of time. For example, you can tell Gmail to show you emails at every hour, rather than as soon as they come in. It’s a “Do Not Disturb” sign for your inbox. And of course, you can whitelist important people like your boss, so you see their messages instantly.
do not disturb firefox
Download: DNDEmail for Firefox