Every few months, in every email marketing community, someone posts the same question: our engagement has dropped, should we run a re-engagement campaign? And every time, the same advice follows. Write a three-email sequence. Tell them what they will miss. Ask if they want to stay. Give them a clear yes or no. Remove the nos. Job done!!
I have been watching this advice play out across programmes for years. And my honest position is that the standard re-engagement campaign, as most teams run it, does more damage than it prevents. It sends emails to the people least likely to engage with them, at the moment their non-engagement is most likely to be hurting your deliverability, and it frames the problem as one that requires a campaign to solve — when the actual problem is something else entirely.
This blog is my argument for scrapping it. Not for doing nothing, but for doing something smarter, and for redirecting the energy that goes into re-engagement campaigns toward the thing that actually solves the underlying problem: growing your list properly.
Let me walk through what happens when you run a standard re-engagement campaign, from a deliverability standpoint.
You identify a segment of contacts who have not opened or clicked in the last 90 days, or six months, or whatever threshold you are using. You build a three-email sequence asking them to confirm they want to stay. You send it.
That segment, by definition, contains your least engaged (and highest risk) subscribers. People who have been consistently not opening, not clicking, not interacting with your emails for months. Inbox providers have been watching this behaviour. Gmail, Outlook, and Yahoo have all built a picture of how each individual subscriber responds to your emails, and for this segment, the picture is consistently negative.
Now you send three emails in quick succession to the people generating your worst engagement signals. The open rates on these emails will be low, because these people do not open your emails, which is why they are in the segment. The click rates will be low. Some of them will delete without opening, which is a negative signal. Some will have addresses that have gone dormant or no longer exist, generating bounces. A small number will mark you as spam, because your email arriving now, after a long silence, feels unexpected and unwanted.
You have just sent a high-volume blast to your worst-performing segment. From a reputation standpoint, this is close to the worst thing you can do. It is the kind of sending behaviour that damages your domain reputation at exactly the providers that matter most.
I am not saying the underlying instinct is wrong. Managing an unhealthy, disengaged list is important — carrying a large proportion of unengaged contacts does put long-term pressure on your sender reputation. But the re-engagement campaign is the wrong mechanism for dealing with it. It treats the symptom (disengagement) with a response (more email) that compounds the problem.
The standard re-engagement campaign is triggered by non-opens. Ninety days without an open, or six months, or twelve — whatever the threshold, the underlying logic is the same: if someone has not opened your email, they are disengaged.
I have covered this at length elsewhere, but it needs saying here because it is foundational to why re-engagement campaigns are built on shaky ground.
Open rates have been unreliable as a measure of human engagement since Apple launched Mail Privacy Protection in 2021. MPP pre-fetches emails for Apple Mail users, registering a machine open whether or not the person ever looked at the email. Since 2026, Gmail’s Gemini integration auto-opens emails to generate AI summaries, inflating open rates further from the Gmail side. Industry average open rates are sitting around 45% — a number that reflects machine activity as much as human attention.
Which means: the segment you are targeting with your re-engagement campaign contains a significant proportion of people who are being misclassified. They may not be opening in a way your tracking can see — but that does not mean they are not engaging with your brand in other ways. They may be visiting your website. They may be reading your content via another channel. They may have opened emails that were pre-fetched by a privacy tool and counted before they actually looked at them.
And here is the part that makes the re-engagement campaign even more problematic: among the people who genuinely have not interacted with your brand in months, many of them are simply not going to respond to an email asking them to confirm they want to stay. If they wanted to stay, they would have been staying. The email that reaches them is the email they were not reading. Sending a re-engagement sequence to people who are not reading your emails is a low-probability activity at best.
What disengagement is actually telling you — and it is not what you think
Before you decide what to do about disengaged contacts, it is worth being honest about what disengagement actually means, because it is not a single thing.
Some of your non-openers are genuinely gone. They signed up for something specific, a one-off download, an event they attended, a discount code, and they were never going to be ongoing subscribers. The relationship was transactional and finite, and the email engagement was always going to drop off once they had what they came for. These people are not re-engageable, because there was never an ongoing relationship to re-engage.
Some of your non-openers have changed context. Their role changed, their company changed. The problem you solve is no longer relevant to where they are now. A re-engagement email is not going to change that. What they need is a graceful exit, handled in a way that does not generate a spam complaint.
Some of your non-openers are actually engaged with your brand, just not through email. They read your blog. They follow you on LinkedIn. They attended a webinar. They are warm contacts who happen to consume your content via channels other than the inbox. Suppressing them based on email non-engagement would be removing a warm relationship because you are measuring it with the wrong instrument.
And some of your non-openers are the billboard effect in action, people who see your sender name and subject line regularly, build an ambient familiarity with your brand, and will convert at some future moment without ever clicking on an email. I covered this in detail in The Billboard Effect blog, but the short version is: the absence of opens is not the absence of commercial value.
The mistake the re-engagement campaign makes is treating all of these groups identically, as one undifferentiated blob of disengaged contacts who need to be given a yes-or-no ultimatum. They are not the same. They need different things. And a blunt three-email sequence cannot account for any of those differences.
The goal of list management is not to re-engage disengaged contacts. The goal is to maintain a list that generates good engagement signals, protects your sender reputation, and contains people who actually want to hear from you. The re-engagement campaign attempts to achieve this by adding more email. The better approach achieves it by being smarter about who stays on the list in the first place, and how suppression decisions are made.
Here is what I recommend instead.
Here is my honest view of why re-engagement campaigns have become so prevalent, and why I think they point in the wrong direction.
A re-engagement campaign is a reactive response to list decay. Lists decay because contacts disengage over time, because people’s situations change, because original acquisition was not targeted enough, or because the email programme has not given people a compelling enough reason to keep paying attention. All of those things are true. And a re-engagement campaign addresses none of them.
What a re-engagement campaign actually does is attempt to recover something that was never going to be sustainable. It tries to rescue relationships that have already ended, or that were never strong enough to survive in the first place. And in doing so, it keeps the focus on the wrong end of the problem.
The right end of the problem is acquisition.
Every email list decays, of course it does! Contacts disengage, email addresses change, people’s situations shift. An average email list loses somewhere between 20% and 25% of its effective engaged audience every year, through a combination of unsubscribes, address changes, and gradual disengagement. That is not a failure of your programme. It is the natural lifecycle of a contact database operating in the real world.
The teams who obsess over re-engagement campaigns are, in effect, trying to pump water back into a leaking bucket instead of turning up the tap. The bucket will always leak. The question is whether you are growing fast enough to more than compensate for the natural loss.
A programme that adds 500 new, genuinely interested contacts every month and loses 200 to natural decay is a growing programme. A programme that adds 50 new contacts every month and runs re-engagement campaigns to try to recover 30 of the 200 who have drifted away is a declining programme, and the re-engagement campaign is not going to change that trajectory.
The energy that goes into building, running, and monitoring a re-engagement campaign sequence would almost always deliver more commercial value redirected into acquisition: improving the lead magnet, optimising the sign-up form, building the referral mechanism, running the list-building event, partnering with complementary audiences. These activities build the list with people who actually want to be on it, which is the only sustainable version of list health.
To pull it all together: here is what I recommend replacing the re-engagement campaign with.
Quiet, continuous, and protective of your sender reputation
Set up a rolling suppression process that operates in the background of your programme at all times. Contacts move through stages based on their meaningful action history, not their email open history. No campaigns. No sequences. No ultimatums. Just a quiet, systematic approach to keeping your sendable list populated with people who are actually present in their relationship with you.
Because the goal is a growing, healthy list — not a smaller, re-engaged one
Define what good acquisition looks like for your programme. What is the lead magnet? Where are the sign-up forms? What is the content that attracts the right subscribers? What events or partnerships drive high-quality list growth? Set a monthly growth target. Track it. Review it. Treat it as the primary metric for list health, because it is.
A list that is growing at net 10% per year, with good engagement signals, is a healthy programme. A list that is shrinking despite re-engagement campaigns, or stagnant because acquisition is not being invested in, is a programme with a structural problem that no campaign can fix.
Make leaving easy. It protects you.
Every email should make it easy to unsubscribe. One-click unsubscribe is now a mandatory requirement for bulk senders at Gmail and Yahoo, and it is the right thing to do regardless of compliance requirements. An unsubscribe is not a failure. It is a clear signal from someone who does not want to hear from you, given voluntarily, which protects your reputation far more than a spam complaint from someone who could not find the unsubscribe link.
I would rather have a smaller list of people who actively want my content than a large list padded with people who are not reading and are generating quiet negative signals every time I send.
Know what your programme is actually doing
Measure your list health through meaningful actions — click rate, reply rate, meaningful website actions from email traffic, and commercial outcomes — rather than through open rates that are increasingly unreliable. Set benchmarks for these metrics and track them over time. If meaningful action rates are declining, that is a signal to look at content relevance, sending frequency, and list quality — not a signal to run a re-engagement campaign.
The re-engagement campaign is one of those email marketing tactics that sounds responsible — you are being conscientious about your list, proactive about engagement, tidy about your database — but that in practice creates a deliverability event, recovers a small fraction of the targeted contacts, and does nothing about the underlying problem it is supposed to address.
Disengagement is natural. Lists decay. The answer is not to send more email to the people who are not reading your email. The answer is to build a rolling suppression strategy that handles list decay quietly and protectively, and to invest in acquisition so that the list you have is always being refreshed with people who actually want to be on it.
Stop trying to re-engage people who have already left. Start building relationships with people who have not arrived yet.
That is where the growth is.