By Mehdi HassanWhat is voice of customer research in copywriting?
Voice of customer research, or VoC research, is the practice of gathering the exact language customers use and putting it into your copy. Instead of inventing how to describe the problem, you find out how buyers already describe it. When a prospect reads a line that sounds like their own thoughts, they trust the page faster.
In copywriting, VoC isn't about satisfaction scores or NPS dashboards. It's about words: the phrase someone used to explain the problem to their boss, the doubt they had before signing, the result they told a colleague about. Those words become headlines, section titles, objection answers and FAQs.
It's the first step in our process for SaaS website copywriting, and the reason we start every page with the words rather than the wireframe.
Why does customer language beat writing from scratch?
Customer language beats writing from scratch because it matches how buyers think and search. Founders describe products in terms of features and architecture. Buyers describe them in terms of problems and outcomes. Copy written from the inside tends to be accurate but unrecognisable to the people you're trying to reach.
It also makes writing faster and arguments shorter. When a team debates two headlines, a column of real quotes settles it. And it gives you proof material: specific results, named before-and-after stories and objections you can answer directly. For the difference between features and the outcomes customers actually mention, see features vs benefits.
Where do you find voice of customer data?
You find VoC data in five main places, ranked here by how useful the language tends to be for copy. Start with the sources you already own, then go external. You don't need all five to start; two good sources beat five shallow ones.
Source | What you get | Best for |
|---|---|---|
Sales and demo call recordings | Questions, objections, how prospects describe the problem | Objections, FAQ, problem section |
Customer interviews | Triggers, alternatives, the moment they decided | Hero, positioning, proof |
Reviews of you and competitors | Praise and complaints in public, unprompted words | Outcomes, differentiation |
Reddit and community threads | Unfiltered frustration and workarounds | Problem framing, cold traffic angles |
Support tickets and onboarding chats | Where expectations didn't match reality | Clarifying claims, setting expectations |
Calls and interviews
Recordings of sales calls are the richest source you already have. Listen for the first two minutes, when prospects explain why they took the call. For interviews, talk to five to ten recent buyers and ask what they used before, what made them look, what nearly stopped them and what changed afterwards. Our guide to running customer interviews that don't lie to you covers question design.
Reviews and communities
Read three-star reviews of your competitors first: they're specific about what's missing. On Reddit and niche forums, search for the problem rather than product names, and look for posts where someone describes a workaround. Those workarounds are your real competitive alternative.
How do you build a VoC swipe spreadsheet?
A VoC swipe spreadsheet is one sheet where every quote lives, with enough tags to sort and count. Keep it simple enough that you'll actually fill it. The structure below has worked for us across many projects.
Set up the columns
Quote (verbatim), source, date, customer type, theme, and a notes column for your interpretation. Keep the quote and your notes separate.
Paste quotes verbatim
Copy exact words, including awkward phrasing. Don't tidy them up; the rough wording is often what makes a line feel real.
Tag each quote by theme
Use a short list: problem, trigger, alternative, desired outcome, objection, result, and language to avoid.
Highlight repeats
When the same idea or phrase appears in three or more quotes from different sources, highlight it. These are your headline candidates.
Map quotes to page sections
Add a column for where each strong quote could go: hero, problem, proof, objection or FAQ.
How do you turn customer quotes into copy?
You turn quotes into copy by matching each theme to the page section it serves, then using the customer's phrasing as directly as the format allows. Sometimes a quote becomes a headline almost word for word. More often it becomes the angle, and you tighten the wording around it.
- Problem quotes become the hero or problem section. 'I spend Sunday nights building the rota' is a stronger opener than 'Scheduling is complex'.
- Trigger quotes tell you which ads and landing pages to build, because they describe the moment someone starts searching.
- Objection quotes become FAQ questions and objection-handling sections, phrased the way buyers ask them.
- Result quotes become proof, ideally as named testimonials with permission.
- Alternative quotes shape your comparison and 'why switch' sections.
For example, suppose your swipe file points to a new headline
Hypothetical example: a tool for agencies to collect client feedback on designs. The current headline is 'Streamlined feedback for creative teams'.
The swipe file shows the phrase 'feedback scattered across email, Slack and PDFs' in four interviews and two reviews. Three sales calls mention clients 'replying to the wrong version'. Two competitor reviews complain about clients needing an account to comment.
The new headline draws on the repeats: 'Get client feedback in one place, on the right version.' The subheadline answers the competitor complaint: 'Clients comment straight on the design, no account needed.' Nothing in either line was invented; it was selected. This is an illustration, not a real client.
Once you have strong lines, test them before rebuilding the page. Our guide to conversion research methods covers surveys and user tests, and if you have enough traffic, our A/B testing guide explains how to compare headline angles properly.
How much voice of customer research is enough?
You have enough VoC research when new sources stop producing new themes. For most B2B products, that happens after five to ten interviews plus a review of recent calls and competitor reviews. If every new quote fits an existing theme, start writing.
Keep collecting after launch. Add new quotes from calls and tickets to the same spreadsheet every month. Over time it becomes the reference for every page, ad and email, and a useful input to your brand voice guide, because it shows the words your customers respond to.
