As a potential customer, how should I start and end an email if I am emailing a business, for example, to ask about a product? How should I introduce myself? Would I need to use 謙譲語 and 尊敬語?
Additionally, what would be the difference between if I knew the name of the person I will be emailing and not?
I saw this question but it seems to only address the case that I have already interacted with the business in the past, which isn't the case.