Thank you all! As I said, I switched from iPhone and say what you want about iPhone, but the one thing I miss is their refusal to alter the functions of their phone for carriers. The native voicemail app is disabled so I have to pay Sprint for voicemail (all the carriers do it). They do have a free version, but they serve ads on it. WTF. I bought the phone from Samsung and already pay for service, so what gives them the right to disable functions and hold them for ransom?
Anyway, that and Samsung Pay popping up while I'm in a store to tell me I can use the app in "store's name" has made me suspicious of what could be coincidental junk mail. But still, how random is Packer Backer sending me an email within 30 minutes of a photo?
I'll check all my settings. Thank you all for your help.
Wow. I feel better.