You've designed the study. You know what you need to learn. The one question left: where do the participants come from?
Recruitment is one of the decisions researchers get least guidance on — and one of the ones that most directly determines whether a community delivers. The right participants make everything easier. The wrong ones produce data you can't trust and engagement rates that drag the project down before it starts.
There are four main sources for recruiting community participants. Each has a distinct cost profile, quality ceiling and use case. Here's how to think about them.
Internal customer or employee lists
If you have an existing relationship with the people you want to hear from, this is often the most cost-effective place to start. Recruiting from an internal list keeps costs low and creates a natural sense of reciprocity — participants are already connected to your brand and typically more invested in the outcome.
The catch is conversion rate. Unless your list has a warm relationship with you, email-based recruiting typically yields 1–2%. Run the numbers before committing to this as your only source: a list of 5,000 might net you 50–100 qualified respondents. That's workable for some studies and not nearly enough for others. If the list is too small or the conversion rate too low, plan to supplement.
Also factor in familiarity bias. People who already know your product or company will bring assumptions into the research. That's useful for some questions and a problem for others — be deliberate about whether it serves your study objectives.
Social networks
Social recruiting is a good secondary source, particularly when budget is tight or when you're supplementing a panel with a specific population that's active in a particular community or space. LinkedIn works well for B2B and professional profiles; niche forums and communities can surface highly engaged participants for specialized topics.
Expect conversion rates to be lower than internal lists. And because the recruitment is open rather than targeted, you'll need a well-designed screener to filter out participants who don't fit your profile — you'll attract a broader range of respondents and reject more of them. Build that into your timeline and budget.
Panel recruiting
This is the most common recruiting method for online research communities on Recollective. Participants are sourced from an online database via a brief screening survey, filtered by your demographic and behavioral requirements. It's fast, scalable and puts a verified population within reach quickly.
Costs vary significantly depending on how niche your specifications are. A general population recruit might cost a few dollars per person; a highly targeted recruit — a specific professional role, a rare diagnosis, a narrow behavioral profile — can run well over $100 per person before incentives. Get clarity on any project minimums upfront, particularly for smaller qualitative communities where those minimums can represent a meaningful portion of your total recruitment budget.
One important caveat: panel providers are built for project-based recruiting. If you're building a long-term community, most panels can't reliably meet that need. You'll typically need to switch to a qualitative recruiter for anything that requires sustained engagement over months.
Specialist qualitative recruiters
When the population is highly niche, the participation requirements are demanding or you need long-term commitment from participants, a qualitative recruiter is usually the right call. They combine multiple sources — panels, social networks, affiliated international agencies — and apply hands-on verification to ensure quality and identity.
This is the most expensive option. Expect costs well over $100 per person before incentives and management fees. What you get in return is a much more active service: a recruiter who will work the problem with you, follow up on dropouts and advocate for your requirements across their network. For complex or hard-to-recruit studies, that hands-on support is often the difference between a community that launches strong and one that never gets off the ground.
Four questions worth answering before you recruit
Whichever source you choose, your recruitment decisions should be informed by four things:
How easy is this population to reach — and retain? Some groups are easy to find but hard to keep engaged. Factor in both the cost of recruitment and the likely attrition rate when sizing your initial pool.
How much are you asking of them? A three-day diary study is a different ask than a six-month insight community. Longer, more demanding studies require a higher incentive and more careful screening for genuine interest and availability.
What do they receive in exchange? Incentives don't have to be purely financial — early access, exclusive findings, a sense of contribution and recognition all motivate participation. Align the incentive structure to what the population actually values.
How much is enough? Qualitative communities don't need the same sample sizes as quantitative surveys. But you do need enough to account for natural dropout, so recruit above your target number and plan for attrition from the start.
Read next: Inflows — Recruiting, Screening and Balancing in Recollective
Read next: How to Recruit the Right People for Your Research Community (and Keep Them Engaged)
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