I can build that brief. "Email marketing" is very broad, so a few details decide the whole angle:
- Your site: what's the domain, and what does the business sell?
- Your audience: who is the reader, and how experienced are they? A solo shop owner sending a first newsletter needs a very different piece from a marketer comparing tools.
- The exact query: is "email marketing" the search you want to target, or something narrower like "email marketing for small business"? A broad two word term usually mixes several intents, so a narrower target is often easier to win.
Optional, but helpful: the top results you see (with URLs, since I cite each by URL), a list of existing pages on your site I can link to, and a target word count. Without a word count, I'll use a default based on intent and say which.
Once I have these, you'll get intent, a SERP gap summary, an angle, an outline, questions, facts to source, internal links and a title and meta draft, for your approval before it goes to a writer.