Okay, I see what you mean.

TBH,

1. for blogging, the proof is the PretzekBox blog itself - I write all my posts in Gmail and email it in.

2. for email, the photo you see on the main landing page is of my PretzelBox for one of my domains

3. I have about 40 files in my File Store from where I share links with people who need documents for me. E.g., here's an image of me writing this message @ https://pretzelbox.cc/cdn/lkmn7s5/Screenshot%202022-05-01%20...

I know I am just some guy on the internet and you don't have to believe me but PretzelBox is very much a real product.