New thing here. @Google photos is now sending me "new memories" & photos it "suggests I share" on my iphone. Since you seem to know a lot about this @DaveHogue PLEASE: how can I make this stop?
They beat me to it!
Just about all of those suggestions, reminders, and alerts can be controlled by adjusting the notifications settings. (It varies between iPhone and Android, but that is a good place to start.)