If you send me an email that has no text to remind me who the f you are, you get blocked. Maybe I did subscribe or for some reason want to hear from you. But who remembers every single vendor or service they’re okay with? I sure don’t. Don’t put your information in images that aren’t going to display right away or at all. Loads of mail services block images until the user affirmatively says show them, please.
So, ffs, if you want your email to get read, then have a text only reminder of who the fuck you are and why I’m hearing from you. Otherwise, you’re blocked.