Picture an online store with 8,000 past buyers. About 3,000 of them have not ordered in over a year. Nothing went wrong with most of them. They got busy, they found something good enough somewhere else, or they simply forgot you exist.
On October 22, Google started offering that store a way to go after those 3,000 people. Its new retention modes let Performance Max, Search and Shopping campaigns bid higher whenever someone on your lapsed-customer list is searching, so your ad is more likely to be the one they see. It sounds like exactly the right tool, and for some stores it will be.
But there is a question to answer before you switch it on. The list Google needs from you is a list of your own customers, with their email addresses. You can already reach every one of those people for almost nothing. So the real decision is not whether to win lapsed customers back. It is which of them are worth paying Google to reach, and in what order.
Retention Only Is the One New Google Ads Mode That Stops Looking for New Customers.
Google's announcement describes three ways to point a campaign at the customers you already have. They sound similar and they do quite different jobs.
Re-engagement Mode is the win-back setting. In Google's words, it lets your campaigns "prioritize customers that haven't placed an order in a while, while still running your ads for your main target audience." Your campaign keeps finding new buyers the way it always has. When someone on your lapsed list shows up in an auction, Google is willing to bid more for them.
Loyalty Mode does the same thing for members of a loyalty program. It can also show those members their member pricing or member shipping in your Shopping ads, which only works if you have added those benefits to your Merchant Center feed.
Retention Only Mode is the one that changes the campaign's whole job. Google says it lets you run campaigns "fully dedicated to customer retention, only reaching the key segments of your customer base that you specify." No new-customer prospecting happens in that campaign at all. It talks only to the people on your list.
The same announcement added one more option that matters here. Until now, telling Google a customer was worth extra meant typing a flat dollar amount, such as $20 on top of every new customer's order. You can now choose a percentage instead, from 1.1x to 5x, so the bonus grows with the size of the order. Google's example is a 1.2x setting that turns a $100 purchase into $120 for bidding purposes and a $500 purchase into $600. If your orders range from $30 to $600, a percentage is the more honest way to express what a customer is worth, because a flat $20 is a big push on a small order and barely registers on a large one.
Google's Announcement and Its Help Pages Don't Agree Yet.
Here is a detail worth knowing before you go looking for the setting. Google's October 22 announcement says retention goals "are rolling out this month for Performance Max, Search and Shopping campaigns." Google's help page on customer retention, which we read on October 23, still says that re-engagement "is available only in Performance Max campaigns currently but will soon be available for Shopping campaigns." The same page lists Loyalty for Performance Max and Shopping only, and does not mention Retention Only Mode at all.
That is normal for a rollout. The announcement describes where Google is going, and the help pages catch up over the following weeks. Practitioners started posting screenshots of the new "Customer retention" setting the day after the announcement, so it is reaching accounts. It has not necessarily reached yours.
So do not plan around either document. Open one of your campaigns, go to the Settings tab, and look for a section called Customer retention. If it is there, the rest of this article applies to you now. If it is not, it will apply soon, and you have time to do the free part first.
Retention Mode Is Locked Behind Five Requirements Most Small Accounts Haven't Met.
Even once the setting appears, Google will only let you use re-engagement on a campaign that meets every one of these conditions.
1. The campaign optimizes toward purchases. Re-engagement is built for stores. Google's help page says the campaign must be optimizing toward purchase conversion goals, and its lifecycle goals table lists a purchase goal as required for re-engagement.
2. It uses value-based bidding. That means Target ROAS or Maximize Conversion Value. A campaign bidding for a count of conversions has nothing to add the extra value to.
3. The new-customer setting is already on. Google requires the campaign to be using new customer acquisition in its "New Customer Value" setting, the one that bids more for first-time buyers. Retention is layered on top of acquisition, not offered instead of it. We explained how that setting works, and how much it inflates your reported revenue, in Performance Max for Ecommerce Is Three Decisions. Google Makes All Three Look Optional.
4. You upload the lapsed list yourself. This is the requirement that surprises people. For new-customer bidding, Google can detect your existing customers on its own from your purchase tracking. For re-engagement it cannot. Its documentation says lapsed customers can only be identified from a Customer Match list you supply through a connected CRM, the Google Ads API or a direct upload, and that "autodetection and tag-based remarketing lists" are "not compatible with this mode." You also decide what lapsed means. Google leaves the definition entirely to you.
5. Your account has access to Customer Match. Google requires a good history of policy compliance and a good payment history. And some businesses cannot use Customer Match at all: Google's personalized advertising policies apply to customer lists too, which keeps businesses in sensitive categories, including many in health care, from using them.
Two more things belong on this list as warnings rather than rules. First, list size. Google's note on customer lists for these lifecycle goals says a list with fewer than 1,000 members may weaken the campaign's ability to do its job, and only part of any list will match: an uploaded list commonly matches somewhere around 60 to 80 percent of its rows to Google accounts. A store with 600 lapsed customers is starting below the line before the match rate takes its cut.
Second, Retention Only Mode. Reaching only the people on a list is list targeting, and Google's Customer Match policy reserves list targeting for accounts with at least 90 days of history and more than $50,000 in lifetime spend. Google has not said whether that threshold applies to Retention Only Mode. Until it does, assume a small account may not be able to use that mode, and plan around re-engagement, which bids higher for your list without restricting the campaign to it. If the $50,000 rule is new to you, Your Customer List Is the Best Audience You Can Give Google Ads. explains what every account can still do with a list regardless.
Google Bids on Lapsed Customers Using the Dollar Figure You Give It.
When you set up re-engagement, Google asks for one number: the value of a lapsed customer. Its guidance is that this value "should usually sit between your typical new customer value and existing customer value." In other words, a customer who drifted away is worth more to you than a regular repeat buyer and less than a brand-new one.
That number is not a report. It is an instruction. Google adds it to the value of any purchase from someone on your lapsed list, and then bids as if the sale were worth that much.
Here is what that does in practice. Say your average order is $80 and your campaign runs on a Target ROAS of 400 percent. At 400 percent, Google is aiming to spend about $20 to win an $80 sale. Now set a lapsed customer value of $15. To the bidding system, a lapsed buyer's $80 order is now worth $95, and at the same 400 percent target it is allowed to spend about $23.75 to win it. You did not touch the target. You agreed to pay roughly 19 percent more for that customer.
Andrew Lolk of Savvy Revenue makes the point about new-customer values that applies here word for word: adding value for a customer segment effectively lowers the return you are asking Google to hit for that segment, and nothing in the interface spells that out. The 400 percent on your screen stays 400 percent. The real return on those lapsed sales is lower.
The added value also lands in your reports. Google counts it as conversion value everywhere you look, so a campaign can show a healthy return on revenue that partly does not exist. Add the "Original conv. value" column, which strips these adjustments out, before you judge anything. (Our piece on why your Google Ads bid target is an instruction, not a wish covers what happens when a target and reality drift apart.)
And there is the budget. Google's own best-practice advice for re-engagement is to "increase your budget by at least 20% initially to accommodate the focus on previously inactive customers." On a campaign spending $3,000 a month, that is $600 a month you are being asked to add before you know whether it works.
So pick it like a price. Start from what a returning customer is actually worth to you in profit over the next year, not in revenue on one order, and set the lapsed value at a level you would be comfortable paying for if every one of those sales came at that cost.
Your Email List Already Reaches Your Lapsed Customers for Free.
Now look at the list Google is asking you to upload. It is a list of people who bought from you, with their email addresses. That is not a list you have to rent. You own it, and you can send every person on it a message today for a fraction of a cent each.
That changes the economics of everything above. Every lapsed customer who comes back because of a well-timed email is a customer you did not pay $23.75 to win back through an ad. If you turn on re-engagement before you have a working win-back email, you are paying Google for some customers who would have answered a free message.
We have written about the win-back email itself in Ecommerce Email Flows: The Five That Actually Matter, and about timing it to your customers' natural reorder rhythm in Your First Sale Barely Breaks Even. The Second One Is the Profit. The short version: a few short messages, sent when a customer has gone quiet for longer than your typical customer goes between orders, with a real reason to come back.
What the ad does that email cannot is timing. An email arrives when you send it. A search happens when the customer is ready to buy, possibly from someone else. The lapsed buyer who ignored three emails in August and is typing "replacement filter cartridge" into Google in November is exactly the person retention mode is for. At that moment you are not reminding them you exist. You are in the auction while they are shopping.
That is a real advantage, and it is worth paying for. It is just worth paying for only on the people the free channel did not already bring back.
The Lapsed Customers Worth Paying Google For Are the Ones Your Win-Back Email Missed.
Put those two ideas together and you get a sequence that spends less and learns more than switching retention mode on across your whole list.
Define lapsed by your own rhythm. Google leaves the definition to you, so make it mean something. If your customers typically reorder every 45 days, someone at 120 days is lapsed. If you sell something people buy once a year, 15 months might be the line. Pull the list from your store platform using that cutoff.
Send the win-back first. Run your win-back email sequence to the whole lapsed group and give it about three weeks to work.
Upload only the people who did not come back. After three weeks, remove everyone who bought again and upload the rest to Google Ads as your lapsed-customer list. These are the customers email could not move, which makes them the customers where paying for an ad has a chance of adding something.
Refresh it monthly. People who come back should come off the list, and newly lapsed customers should go on. Customer Match lists also expire: memberships older than 540 days stop counting, and a list needs at least 100 members added or updated within that window to stay eligible. A connected CRM or store integration handles this automatically. A manual upload needs a calendar reminder.
Without a Holdout Group, Google Takes Credit for Customers Who Were Coming Back Anyway.
Some lapsed customers will come back on their own, whatever you do. A few of them will happen to click one of your ads on the way. If you upload your entire list, you have no way to tell how many of the returns Google reports were caused by the extra spend and how many would have happened anyway.
Google gives you a "re-engaged customer" column once the setting is on, and suggests tracking a re-engagement ratio: lapsed customers re-engaged divided by all customers the campaign drove. That is useful for watching the setting work. It cannot answer the question you actually care about, which is how many of those customers came back because you paid more to reach them.
The fix is simple and it costs you nothing. Before you upload, split the non-responders in half at random. Upload one half as your lapsed list. Leave the other half off. Then wait 60 days and count, in your own store records, how many people in each half placed an order.
Using the numbers from the opening: the win-back email brings back 240 of the 3,000 lapsed buyers. That leaves 2,760, which you split into two groups of 1,380, each comfortably above the size Google warns about. Say that after 60 days, 66 people in the uploaded group have ordered again and 45 in the held-out group have. The difference, 21 customers, is roughly what retention mode earned. Google's column will show you some of the 66. The held-out group tells you that about two-thirds of them were coming back anyway.
Now divide the extra money you spent by those 21 customers, and compare it with what a returning customer is worth to you. That is the only number that tells you whether to keep the setting on, raise the lapsed value, or switch it off.
Lead Generation and Health Businesses Can't Use Retention Mode. Small Stores Shouldn't Yet.
This launch is aimed squarely at online stores, and Google's own announcement frames it around the holiday shopping season. For a lot of small businesses, the honest answer right now is to skip it.
Lead generation businesses. If your campaigns optimize toward calls, form fills or booked appointments rather than purchases, re-engagement is not available to you. The closest tool for a lead business is still new customer acquisition's "new customers only" setting, which we covered in Demand Gen's New Prospects Mode Stops You Paying for Customers You Already Had.
Health care and other sensitive categories. If Google classifies your business in a sensitive interest category, Customer Match is off the table, and so is every retention mode that depends on it.
Stores with small lapsed lists. If your list of non-responders is in the hundreds rather than the thousands, put your effort into the win-back email and come back to retention mode when the list has grown.
Stores without purchase tracking or value-based bidding. If your Google Ads account does not yet record purchases with their values, that is the first job, and it pays off long before retention mode does.
If none of those describe you, retention mode is worth a careful test this season. Turn on the win-back email, upload only the people it missed, hold half of them back, and judge the result by your own records. Done in that order, you pay Google only for the customers your free channel could not reach, and you find out whether those customers were worth it.
If you would rather have someone set up the lists, choose the values and run the holdout for you, that is part of what our Google Ads management team does every day. And if you are doing it yourself, the order above is the whole method.
