I didn't know, thanks. For those trying to find it. It's settings -> advanced -> content settings -> notifications. So you can turn off the top slider from "

I didn't know, thanks. For those trying to find it. It's settings -> advanced -> content settings -> notifications. So you can turn off the top slider from "ask before sending" to blocked. Probably a good time to check your "allow" list on the same page. My blocked list is about 100 long.