I’m very careful with privacy and security so I was surprised I got an obvious phishing email from “American Express”. I reported the email and moved on only to get another one today. I checked haveibeenpwned and it came back clear. I have never gotten a phishing email before the other day. As for the senders, they all came from generic IT sounding email addresses. They obviously weren’t American Express.
I’ve used this many times before. But this is so well known I wonder, why wouldn’t spammers/scammers just remove the “+” and trailing characters before “@“?