How to keep AI marketing on brand

What "on brand" actually means

Being on brand is more than using the right logo. It is the combination of how you look, how you sound and what you will and will not say. A customer should be able to read a post without the logo and still recognise it as yours. When AI drafts your marketing, each of these needs to be spelled out, because the tool cannot guess them.

It helps to split "on brand" into three parts that you can write down and check: the look, the voice and the rules.

Step 1: Write down the look

Pick the handful of colours your brand uses and note what each one is for: a main colour, an accent, a background, a text colour. Note whether your logo should appear on images, and in which corner. This is the part most people already have in a style guide, but it needs to be stored where your AI tool can use it on every image and page, not in a PDF nobody opens.

Step 2: Describe the voice in a sentence

Long brand voice documents are hard to apply. A short description is easier to use and easier to check. Try finishing this sentence: our brand sounds like... For example, a friendly local expert who keeps it short, or a premium clinical authority that never overpromises. Then add two or three examples of real posts or emails that you think nailed it.

If you are not sure what your voice is, look at your own website. The way you describe your business there is usually the closest thing you have to a voice already.

Step 3: Build a copy rulebook

The rulebook is where most brands go wrong with AI, because it is the part that is easiest to forget. It is a short list of hard rules:

• Banned words: terms you must never use, for legal, industry or taste reasons.
• Preferred terms: the word you always use instead of a common alternative.
• Name casing: product or brand names that must always be written a certain way, such as all capitals.
• Claims you cannot make: promises your industry does not allow.

Step 4: Enforce the rules on every draft

Writing the rules down is not enough if they only live in your head or in a document. They need to be applied automatically to every draft, every time, before it reaches you. The best setup checks drafts against the rulebook and fixes violations such as a banned word or a lower-case product name before you ever see them.

This matters most when you are busy. On a quiet day you might catch a banned word yourself. On a day when you are approving twenty posts across three brands, you will not.

Step 5: Approve before anything goes out

Even with stored rules, a person should approve every piece before it publishes or sends. Approval is where you catch things no rulebook can: an offer that has ended, a photo that does not suit the moment or a message that is right for the brand but wrong for this week.

Make approval quick by reviewing drafts in batches, editing small things in place and simply leaving the drafts you do not like. Nothing should go out on its own.

Step 6: Keep one voice across new and existing customers

Brands often sound polished in their social posts and completely different in their emails to existing clients. If your newsletters, event invites and follow-up messages are written in the same voice and held to the same rules as your posts, customers experience one brand rather than two.

Common mistakes to avoid

A few patterns come up again and again when teams start using AI for marketing:

• Rewriting the brand description in every request, so it is slightly different each time.
• Keeping the rulebook in a document instead of applying it to every draft.
• Letting the AI publish directly, without a human approval step.
• Using one shared voice for several brands to save time.

How Choir keeps marketing on brand

Choir stores each brand’s palette, voice and copy rulebook, including banned terms, a preferred term and enforced name casing, and applies them to every draft. When you set up a brand, Choir reads your website to work out your voice and palette as a starting point. Every draft then waits for your approval. See the approval workflow and social media posts pages for more, or start a 14-day free trial with no card.