Long emails should still have short opening paragraphs. No more than three sentences, one or two preferred. Basic context ("We still need to figure out waffles"

Long emails should still have short opening paragraphs. No more than three sentences, one or two preferred. Basic context ("We still need to figure out waffles"), people's names if it's a referral or a request for someone else ("Jane said you know waffle batter the best"), and most importantly, if you're asking a question, end with a question mark ("What waffle batter recipe should we use?"). The rest of the email can then be long, but at the end, always restate the question.