I'm emailing a graduate STEM admissions department in the UK, and don't know the modern preferred way to begin the email.
Many authors suggest "Dear Sir/Madam," but of course this implies a problematic gender binary. A common, gender-neutral option, "To whom it may concern" is often criticized as too formal or impersonal.
There is enough advice on this topic to suggest that the recipient will (for reasons that are beyond me) actually care about whether an inherently impersonal email has an opening line at all.
What's a modern, etiquette-conscious applicant to do?
(Feel free to answer for other countries besides the UK too.)