How to recruit participants

You have your list of people to interview. Now you need to get them on a call. This is where many research projects stall. A few emails go out, nobody replies, and the whole thing gets deprioritised.

The problem is usually the approach, not the people. Customers, churned accounts, and even competitors' customers will make time for a conversation if you ask the right way. You need to make it personal, make it easy, and make it clear you are not trying to sell them anything.

In this chapter, you will learn how to write outreach that gets replies, how many interviews you actually need, and whether incentives help or hurt your results.

By the end, you will have a full calendar and a clear timeline for completing your research.

Current customers are the easiest to recruit because you already have their contact information and a relationship to build on. Start here to get momentum before tackling the harder groups.

I always do personal outreach because it gets the highest response rate. Going into the CRM and sending a templated email works, but calling first works better. A quick phone call to explain what you are doing and why their input matters makes the follow-up email feel expected rather than random.

The biggest mistake is sounding like a sales call. If your outreach feels like you are trying to sell something, people will delete it immediately. Be genuine. Explain that you are doing research to improve the product or service, and you value their perspective because they have been a customer for a while.

Keep the message human. Something like: "We are talking to a few of our best customers to understand what is working and what we could do better. Would you have fifteen minutes for a quick call? I would really appreciate hearing your perspective."

That is it. No jargon about "strategic research initiatives." No promises of gift cards. Just a human asking another human for help.

If you run an agency or service business, you can build this into your process. At my previous agency, the thirty-day review was part of our onboarding checklist. Every new client had a call scheduled automatically. It was positioned as a check-in, but it was really customer research. By the time I left, we had hundreds of data points about what made the first month successful or frustrating.

Churned customers and lost prospects are harder to reach because the relationship has ended or never started. But they are often more valuable to interview because they have less reason to be polite.

For churned customers, reach out from someone they had a relationship with if possible. The account manager or customer success person they worked with. Explain that you are trying to understand what you could have done better, and their honest feedback would help.

For lost prospects, the salesperson who ran the deal should reach out. Frame it as learning, not a second chance to pitch. Something like: "I know you went with [competitor], and that is totally fine. I would love to understand what made the difference. Would you have fifteen minutes to share your perspective? It would really help us improve."

Do not be afraid to reach out even if time has passed. People are often happy to share their experience if you approach them with genuine curiosity rather than a hidden agenda.

Four to twelve interviews is enough to see patterns. After ten or twelve conversations, you start hearing the same things repeated. That is when you know you have enough.

Do not aim for statistical significance. This is qualitative research. You are looking for themes, language, and stories that help you understand the decision-making process. Five deep interviews are worth more than twenty surface-level surveys.

I recommend spreading your interviews across the three groups: a few best customers, a few churned customers, and a few lost prospects or competitors' customers. This gives you perspective across the entire journey rather than just one segment.

Plan for about thirty minutes per interview. Some will run shorter, some longer. Block forty-five minutes in your calendar to give yourself buffer.

The whole process, from first outreach to final interview, should take two to three weeks. Do this every quarter, and you will always have fresh insight to work with.

I generally do not use incentives because they can skew results. When you pay someone, they may feel obligated to be positive. You want honest feedback, including the hard stuff.

That said, context matters. If you are asking someone to travel to your office, pay for their transport. If you are asking a lot of time from a very senior person, a small Amazon voucher as a thank-you is reasonable.

For churned customers or lost prospects, you may need to offer something to get them over the line. They have less reason to help you. A small token of appreciation can make the difference.

Whatever you do, do not offer your own product as the incentive. It creates awkward dynamics and attracts people who just want free stuff. Keep it neutral.

Recruiting participants is about being human. Personal outreach beats templated emails. Genuine curiosity beats sales tactics. Making it easy to schedule beats back-and-forth coordination.

Start with your current customers to build momentum. Then tackle churned accounts and lost prospects. Aim for four to twelve interviews spread across the three groups. The whole process takes two to three weeks if you stay focused.