Prospecting campaigns: finding customers who don’t know you yet

A prospecting campaign shows ads to new people who haven’t visited your website, engaged with your pages or bought before. It fills the top of the funnel so retargeting and sales have people to work with. Prospecting usually has a higher cost per result than retargeting, so judge it on new customers, blended MER and growth, not on last-click ROAS alone.

By Hassan Rawther, Founder, Unlearn Academy · Reviewed 21 October 2026

Cutting prospecting killed retargeting

A Kozhikode home décor store saw retargeting ROAS of 8 and prospecting ROAS of 2, so it moved almost all budget to retargeting.

For two weeks results looked great. Then retargeting audiences shrank, frequency soared and total sales fell by a third.

Restoring a 70/30 split between prospecting and retargeting brought sales back; MER was the number that told the true story.

Illustrative example based on a common pattern in Kerala e-commerce accounts. Numbers rounded.

What a prospecting campaign is

Prospecting targets cold audiences: broad, interests or lookalikes, excluding existing customers and recent visitors.

Its job is to create demand and new visitors. Some of its value appears later as retargeting, brand search and direct sales.

Prospecting value = new customers + future retargeting and brand demand it creates

Prospecting vs retargeting

How they differ

ProspectingRetargeting
Cold, new peopleWarm visitors and engagers
Higher cost per resultLower cost per result
Creates demandCaptures existing demand
Most of the budget (often 60–80%)Smaller share (often 10–30%)

How experienced marketers use Prospecting campaign

  1. 1. Growing a new brand

    Without prospecting, there is nobody to retarget.

  2. 2. Launching a new product or course

    Reach new audiences with education and offers.

  3. 3. Feeding the funnel

    Keep retargeting audiences fresh and large enough.

What good looks like

Business typeStarting ruleWhy
Share of budget60–80%Starting rule for most growing businesses.
New customer shareTrack monthlyExclude customers to keep it honest.
Judging window2–4 weeksLonger for long sales cycles.

When the number lies

Last-click undervalues it
Prospecting starts journeys that other channels finish.
Leaky exclusions
Without customer exclusions, prospecting takes credit for existing buyers.

Mistakes to avoid

  • Judging prospecting on retargeting benchmarks

    Cutting the campaigns that feed growth.

  • No exclusions

    Spending prospecting budget on existing customers.

  • Hard-sell creative to cold people

    Low engagement and high costs.

Questions people ask about a prospecting campaign

What is a prospecting campaign?

An ad campaign aimed at people who don’t know your business yet, to bring in new customers.

How much budget should go to prospecting?

Commonly 60–80% for growing businesses, with the rest for retargeting and retention.

Why is prospecting ROAS lower?

Cold audiences need more convincing, and some of the value shows up later in other channels.

Should prospecting exclude past customers?

Yes, so you measure and pay for genuinely new customers.

Put it into practice

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