This may be missing some context, but it seems as though you're saying that you made something with AI and it led to traction. That's great! Seems off the point that blocking LLM service will lead to less exposure over time though.

> Perplexity is good at citing things when it decides to cite things and when you tell it to cite things.

Maybe I'm just lucky, but a quick skim of my Perplexity history yielded only 2 instances of no citations, and they were for general coding queries. I've never had to ask it to cite anything, as that's built into the default prompt.

> lose those aforementioned email conversations.

I think those will remain a possibility as long as LLM users, or services, ensure citations are included in output.