I write quite a lot of support email to customers and find myself doing the following quite often
start by a short list of what the customer has to do
1. To step A
2. send me logs B
3. Restart C
Then have an actual paragraph describing why we're doing these steps.
If you just send the paragraph to most customers you find they do step one, but never read deeper into the other steps, so you end up sending 3 emails to get the above done.
Just a bit upthread we have people mentioning that a business email that is more than a few lines long will just be ignored.