If you run a B2B product with shared Slack channels, you already know where your best testimonials are hiding. They are not in your inbox. They are in a Connect channel or a support thread, dropped casually in the middle of a workday: "honestly this saved us the whole afternoon," "our team would riot if we lost this," "you just fixed the thing three vendors couldn't." Those lines are gold — specific, emotional, unprompted — and most companies let them scroll away because they have no process for turning a Slack message into a published testimonial. This guide gives you that process.
Why Slack praise is worth more than survey praise
A testimonial's power comes from sounding like a real person had a real feeling. Praise you collect through a formal request — a survey, a "leave us a review" email — is filtered through the customer's professional composure. It comes out flat: "great product, would recommend." Praise dropped in Slack is unfiltered. It has the offhand specificity that makes a reader believe it: a number, a task, a moment. That is precisely the quality that converts, and it is precisely what a cold request cannot manufacture. The customer already wrote your best testimonial. Your only job is to notice it and ask permission to use it.
This is the same principle behind catching praise the instant it happens rather than on a schedule — see when is the best moment to ask a customer for a testimonial. Slack just makes the moment visible in a way email never does.
The core workflow: notice, capture, ask, publish
1. Notice — make praise impossible to miss
You cannot rely on memory to catch praise across dozens of channels. Wire up a lightweight signal:
- Set a Slack keyword alert (in your own account) for words like love, saved, lifesaver, thank you, amazing, game changer. You will get a nudge whenever a customer says something quotable.
- If you have a shared Connect channel per account, ask your CS team to react with a specific emoji (say, 💬) whenever a customer drops praise. That reaction becomes your inbox of testimonial candidates.
- Skim resolved support threads weekly. The relief right after a fix is a reliable source of strong quotes.
The goal is that no genuine piece of praise scrolls past unrecorded.
2. Capture — save the exact words, in context
When you spot a quote, capture it verbatim before it gets buried. Copy the message text, the person's name and role, and the surrounding context (what problem had just been solved). The verbatim wording matters — the specificity is the value, and paraphrasing sands it off. Keep a running list: quote, author, date, and a one-line note on what triggered it.
Do not publish anything at this stage. A Slack message is a private communication; capturing it for your own notes is fine, but using it publicly requires permission, which is the next step.
3. Ask — get permission in the same casual register
Here is where most people overcomplicate it. The customer is in Slack, being casual. Do not respond with a formal legal-sounding email. Ask in Slack, in the same tone:
"That genuinely made my day 🙏 — would you be OK if we used that line as a testimonial on our site, credited to you and [Company]? Totally fine to say no, or to tweak the wording first."
This works because it matches the medium and the mood. You are asking at the peak of the feeling, in the channel where the feeling was expressed, with a one-tap yes. Three details make it land:
- Show them the exact quote you want to use, so there is no ambiguity about what they are approving.
- Name the attribution (first name + company, or just role if they prefer) so consent is informed.
- Offer an easy edit and an easy no. People say yes far more often when saying no is clearly safe.
For the general version of asking without friction, see how to ask a customer for a testimonial without being pushy.
4. Publish — preserve the voice, add just enough credibility
Once they say yes, publish the quote as close to the original as possible. Light cleanup is fine — fix an obvious typo, cut a "lol" if it distracts — but keep the specificity and the voice. Add the attribution the customer approved: name, role, company, and a logo or avatar if you have permission. A real name and role roughly doubles the persuasive weight of a quote over an anonymous one, so it is worth the extra ask.
Handling the awkward cases
They gave a vague thumbs-up, not a real quote. A 👍 or "nice" is not a testimonial. Reply and gently draw out the specific: "Glad it helped! Out of curiosity, what did it save you time on?" Their answer is often the quote you actually wanted.
They can say it but not attach their name. Compliance-heavy customers may love you privately but not be allowed to endorse a vendor publicly. Accept it gracefully and offer alternatives: role-only attribution ("Head of Ops, mid-market SaaS"), or an internal quote you can use in sales calls but not on the site. Never push; the relationship is worth more than one quote.
The praise came from a junior user, not the buyer. A great quote from a hands-on user is usable, but for maximum weight you may also want the decision-maker's view. Use the user's quote now, and treat it as a warm signal to ask the buyer separately.
It arrived right after a problem. Praise that lands immediately after you fixed a fire is real, but pairing it with the memory of the problem can undercut it. Consider waiting for a clean, unprompted win — or frame the quote so the resolution, not the incident, is the story.
A simple cadence that keeps the pipeline full
You do not need software to run this. A weekly fifteen-minute habit is enough:
- Review the week's flagged praise (keyword alerts + emoji reactions).
- Capture the two or three strongest quotes verbatim, with author and context.
- Ask permission in-channel while the feeling is still warm.
- Move the approved ones into your testimonial library and publish.
Do this every week and a channel that used to be pure support noise becomes a steady, low-effort source of the most credible testimonials you can get — the ones your customers wrote themselves, without being asked.
The takeaway
Customers who live in Slack are not hard to get testimonials from; they are constantly handing them to you and no one is catching them. Build a habit to notice the praise, capture the exact words, ask for permission in the same casual register, and publish with a real name attached. The informality that makes Slack praise feel unmarketable is exactly what makes it convert — so keep the voice, get the yes, and put it where prospects can see it.