Mom getting notified when I buy things online, and when I receive money.

So, before my mom would receive emails that I start to buy things online I didn't really expect her to start receiving emails. She has an android and I have a iPhone SE so I don't know how that's possible I'm not sure if she has like some type of app or if her email is connected to my cash app card I've literally tried everything like disabling notifications for cash app emails, and phone number. I thought it's cause when I'm near her she receives it but I don't know anymore so can anyone help because she's wondering where I'm getting this money from and all that so how do I stop her from getting notified?