How does brand voice work?
- Choose three or four traits and define each with a this-not-that line, for example confident, not boastful.
- Collect real examples: the founder's best emails, top-performing posts and the phrases customers repeat back.
- Write the do and don't lists: words to use, words to ban, how to handle apologies, humor and jargon.
- Adjust tone by channel and situation while keeping the voice: a refund reply and a launch post differ in tone, not personality.
- Review new copy against the voice guide monthly and update the examples as the brand grows.
A worked example
A family-run moving company in New Jersey had a website that sounded like a corporate brochure while the owner's emails were funny and blunt. An assistant interviewed the owner for an hour, pulled 20 of his emails and the ten reviews that quoted him, and wrote a two-page voice guide: straight-talking, reassuring, a little dry, never salesy. It included 15 phrases he actually uses and eight he hates. The web copy, quote emails and social posts were then rewritten to match, and the phone team got a one-line greeting in the same register. Customers started saying the website sounded like him.
Where does brand voice show up in your tools?
A brand voice guide usually lives in Notion or Google Docs and is referenced from the style guide. Teams paste it into ChatGPT or Claude as a standing instruction when drafting, and tools like Grammarly Business can flag copy that drifts from the defined tone.
Common mistakes
- Describing the voice with adjectives everyone picks, like friendly and professional, that rule nothing out.
- Letting every new writer or agency invent a voice, so the newsletter and the website sound like different companies.
- Confusing voice with tone, and using the same playful register in a complaint reply.
Why does brand voice matter?
Customers trust a company that sounds the same everywhere, and they notice quickly when it does not. A defined voice lets more people write for the brand without diluting it, and it makes reviewing copy faster because there is a standard to point at.
How does AssistBPO handle brand voice?
Our writing and social assistants learn your voice in the first week from your existing copy and a short interview, then write to the guide we build together, with you approving samples until the match is right. If an AI tool assists a draft, a person edits it into your voice before you see it. Voice checks are part of the monthly QA scorecard.