What "new customer" mode actually excludes (and what it doesn't)
If you've been using Google's New Customer Acquisition goal for a while, you probably think your acquisition campaigns are already targeting cold audiences. They're not — not fully.
The existing New Customers mode suppresses past purchasers. That's it. Anyone who has searched your brand name, visited your homepage, watched your YouTube videos, or abandoned a cart is still fair game. Google counts them as "new customers" because they haven't converted yet, but you've already paid to put them into your funnel at some point. You're paying again to reach the same person.
For brands running acquisition campaigns for more than a year, the warm audience overlap inside supposedly "acquisition" campaigns is usually larger than the account data suggests.
What New Prospects mode changes
Google rolled out a new mode called "New Prospects" in late May 2026. The difference is in what gets excluded. New Customers mode only removes past buyers. Prospects mode removes everyone who has had any touchpoint with your brand across Google's properties:
- Past buyers
- Anyone who has ever searched your brand terms
- Website visitors
- YouTube channel viewers and subscribers
The result is a campaign that only serves ads to people who, as far as Google's signals can tell, have no awareness of your brand. It's the closest thing to a purely incremental reach buy available in Google Ads today.
When this actually matters
Not every account needs this lever. If you're managing a mature brand where most of your addressable market already knows you exist, Prospects mode will cut volume and probably hurt short-term numbers.
Two situations where it makes a meaningful difference:
For DTC brands still in growth phase — under $20M in annual revenue, still building top-of-funnel awareness — the audience overlap is real but correctable. Running cold and warm acquisition separately gives you cleaner data on what's actually driving net new customers versus recycling existing intent.
For subscription or high-LTV brands where first-purchase value is 3–5x average order value over 12 months, new customer quality matters more than volume. Prospects mode is a precision tool for that situation. Combined with New Customer Value bidding — where you assign a higher bid multiplier to first-time conversions — Google's own early testing shows a 9% ROAS improvement at the same budget.
How to enable it
Customer Lifecycle goals sit in campaign settings. Prospects mode is a separate option inside that section, distinct from the New Customers setting you may already have on. Currently confirmed for Search and PMax — standard Shopping campaigns are not yet supported.
It requires customer match lists to work correctly. Google cross-references your lists against its own signals to determine who qualifies as a "prospect." The more complete your first-party data — purchaser emails, full subscriber lists — the cleaner the exclusion.
If you're already running New Customers mode, you won't be auto-upgraded. This is a manual opt-in.
The tradeoff nobody is mentioning
In straight ROAS terms, Prospects mode will underperform New Customers mode in the first few weeks. You're cutting reach, so the algorithm needs more time to find converting users from a smaller pool.
The right frame is CAC versus LTV, not ROAS. If you can absorb the short-term volume dip, the customers coming through Prospects mode should be genuinely incremental — people who weren't already heading toward buying from you through another touchpoint.
Most accounts testing this are running Prospects mode in a dedicated campaign with its own budget, not as a replacement for the existing acquisition structure. Different goal, longer evaluation window: 4–6 weeks minimum before drawing conclusions.
What this tells you about your current setup
Before enabling anything, it's worth knowing how much of your current acquisition budget is actually hitting warm audiences. The honest answer for most accounts that have been running for over a year: more than you'd expect. Audiences accumulate overlap over time, and "new customer" campaigns quietly drift toward recycling existing funnel interest.
If you want a clear picture of where your acquisition versus retargeting budget is currently going — and whether your customer lists are clean enough to make Prospects mode worth testing — the free audit at gromerce.com/audit walks you through it in a few minutes.
Cold audience reach is the scarcest thing in paid media right now. At least Google is giving you a more precise tool to find it.
Sources: Search Engine Land, Google Ads Help Center, May 2026
