People do not like long emails. A combination of dwindling free time and a society of instant gratification have made it so that two paragraphs in an email is the equivalent of Atlas Shrugged. Elliott Bell shares a few tips to shorten emails in an article for the Muse.
For starters, cut down on the friendly fluff at the start of emails, and get rid of it altogether if you do not know the person well. You should also excise any words that do not actually convey critical information. Do not be afraid to exclude details that are inherently implied. So to summarize, your goal in an email should be to write just enough that the receiver understands what you are saying without having to ask additional questions. I suppose it is a bit like Hemingway’s iceberg principle.
You can view the full article here: https://www.themuse.com/advice/are-your-emails-too-long-hint-probably