I receive promotional emails from Renderosity (usually described as "courtesy notifications") -- for example, when a wish list item goes on sale.

Normally, e-commerce vendors provide a link so that customers can unsubscribe from promotional emails. Unfortunately, Renderosity emails don't provide that, and I don't see a place in Account Settings where I can do this.

What's your process for letting customers opt out of promotional emails?

If needed, I'll just flag them as spam. But I'd rather not do that if Renderosity provides a better option. Flagging an email as spam is a signal, and it can cause those emails to get marked as spam when they're sent to other people who might actually want them.

Thanks.