Hello vs. Dear Sir/Madam as email salutation

Hi,

I’m going to write an email concerning the status of my order at the online shop. Is it acceptable to use “Hello” as salutation or “Dear Sir/Madam” is more polite?

“Dear Sir/Madam” is more polite - though maybe overly formal, while “Hello” sounds more friendly. I think either one would be fine in your case.

Thank you, Luschen!