Use the delete button.
You can choose to be contacted about open shops by email - or not. It's kind of an all-or-nothing thing. This means that about 90% of the emails you get with job offers are not going to interest you. Delete them and move on. It's the other 10% that make it worthwhile to keep email notifications.
You could set up rules in Outlook to sort emails from different schedulers into different folders, but you want to be careful with that: Schedulers often get moved to different projects and, if you tend to ignore a certain folder, you could find yourself missing a shop you would really want.
You mentioned in another thread that you are with 11 companies. I'm with 130+. I am certain I get a lot more email for jobs I don't want than you do. It's not a big deal to delete the messages that don't interest me.
Hard work builds character and homework is good for your soul.