Set your brand voice
Brand voice is how Smarkly decides what your drafts should sound like. It is built from your own writing, and you can change any part of it.
What it captures
After reading your site, Smarkly describes your writing along a few axes:
Tone. Formal or plain, urgent or patient, warm or clinical.
Style. Sentence length, structure, how you use headings and lists.
Personality. What comes through about the company behind the words.
Point of view. Whether you write as "we", as "I", or impersonally.
Rhythm. Whether your sentences run long or land short.
Words to use and words to avoid. Terms your writing reaches for, and ones it never does.
Each of these is editable. If the description is close but not right, change the wording. Smarkly uses what is written there, so a sentence you wrote yourself carries more weight than one it guessed at.

Giving it more to read
Your website is the starting point, not the limit. You can also add:
Documents you upload. Anything you have already written that sounds the way you want to sound.
Text you paste in. A newsletter you were happy with, a post that got a good response.
Links to articles you have written elsewhere.
More samples make the profile more specific. If the result reads generic, it usually means the source material was thin rather than that the analysis failed.

When it reads wrong
Two common cases.
It sounds like a competitor, not like you. Your site copy was probably written to a template. Paste in something you wrote yourself, in your own words, and re-analyse.
It describes an aspiration rather than what you do. Website copy is often the most polished writing a company owns, and that is not always the voice you want for a weekly email. Edit the profile toward what you actually want, not what the site happens to be.
How drafts use it
The profile is given to the writer along with your facts and your audience. It shapes wording, not content.
Voice never licenses a claim. If your profile says you write confidently, drafts will sound confident. They still cannot assert anything that is not in your facts.