The full guide
Last verified 2026-10-30
Links checked 2026-10-30 · No website to check: this channel works by word of mouth or offline
01What it is and who is there
Customer interviews are short calls with users to learn how they use the product, what they would change and why they chose it. Ending each call by asking "who else has this problem?" turns research into referrals. The people on the calls are your existing users and trial users.
02Cost and what you actually pay for
It is free beyond a video call tool. Some founders offer a small thank-you; if you do, keep it modest and disclose it in any public quotes.
03Is it right for you?
It fits any product with early users. It fits poorly if you have no users yet; start with personal outreach instead.
04Before you start
- A list of active and recently churned users.
- Five or six open questions.
- Consent to record or take notes.
05Step-by-step: how to distribute here
- Invite users personally to a 20-minute call.
- Ask about their work and problem before the product.
- Ask what nearly stopped them from signing up.
- Ask what they would change first.
- End with: "Who else do you know who deals with this?"
- Follow up with any introductions within a day.
06What to post or submit
Invitation:
Hi [first name], you've been using [product] for [time]. Could I ask you a few questions for 20 minutes? I want to learn what works and what doesn't. Here's my calendar: [link].Closing question:
Is there anyone else you know who deals with [problem]? I'd love to hear how they handle it.07Common mistakes and do-nots
- Do not pitch during the interview.
- Do not ask leading questions.
- Do not pressure people for referrals.
08How to measure it
- Track interviews done, referrals received and referrals that became users.
- Log repeated problems.
- A realistic test: 10 interviews.
09Time budget
- Ongoing: 30 minutes per interview plus notes.
10Pair it with
- Founder-led demos and calls — sales calls.
- Case studies and customer stories — stories from interviews.
- Warm intros from your network — referrals.
- Run your own community — invite interviewees.
11Sources
- No external source. Practice-based guide.