Ignore?

You have shown an interest in a particular product. eBay use low-level bots, which don't take into account purchase history.

eBay do not read or respond to board posts. If you feel the occasional email referring to purchases is intrusive, you would have had to have signed up for eBay Plus. I get daily emails about the efficacy of Plus. I BIN them. Simple. Much more efficacious than complaining on the boards. That eBay don't read.

And it's not a technical issue, anyway.