Topcashback - how long to receive payout and will I get notified?

I just joined topcashback to get a subscription to NordVPN. I understand it could take several months to get anything back, and it depends on the vendor. I'm curious as to how long it will take, but also don't want to keep checking frequently.

Will get an e-mail notification when I get cash back applied to my account, or do I have to keep logging in and checking to see if there's been any changes to my account?