How to Win Back Inactive Subscribers (and When to Let Them Go)
A simple re-engagement campaign for inactive email subscribers: how to define inactive, what to send, example emails, and when to remove people.
In short: Find subscribers who haven’t engaged in about six months, send them a short three-email series — a reminder, a reason to return and an honest last check-in — and remove those who still don’t respond. Your list gets smaller but much healthier.
Every list collects people who stopped opening. They're not harmless: inactive subscribers lower your engagement, hurt your sender reputation and can push your emails into spam for everyone. A short re-engagement campaign wins some back — and tells you who to let go.
Define "inactive"
Pick a window that fits how often you send:
- Weekly senders: no clicks or opens in about 90 days.
- Monthly senders: about six months.
- Also consider: no purchases or visits in a similar period.
Remember Apple's privacy features count some opens automatically, so clicks are the stronger signal.
The 3-email win-back series
Email 1: "We miss you"
Subject: It's been a while, {first name}
Remind them who you are and what they've missed: new products, popular content, upcoming events. One main link.
Email 2: a reason to return
Subject: A little something to welcome you back
An incentive if it fits your business — a discount, a free add-on, early access — or simply your best content.
Email 3: the honest check-in
Subject: Should we keep emailing you?
"We only want to send emails you enjoy. Click below to stay on the list — otherwise we'll stop emailing you next week." Then do exactly that.
Make it easy to choose
- One button: "Yes, keep me subscribed".
- An option to receive fewer emails.
- A clear unsubscribe link.
Then clean your list
Anyone who doesn't respond to the series: stop sending them marketing emails (unsubscribe or suppress them). It feels painful to shrink your list, but:
- Your open and click rates rise.
- Mailbox providers see you as a sender people want.
- More of your emails land in the inbox for the people who do care.
Prevent inactivity in the first place
A complete example: an online plant shop
Here's how a small online plant shop might run its win-back automation:
- Segment: subscribers with no clicks in 180 days and no order in a year.
- Day 0 — "We miss you": "Spring is here — our new arrivals are the easiest plants we've ever stocked." Links to a beginner-friendly collection.
- Day 4 — the incentive: "Here's free shipping on your next order, just for you, until Sunday."
- Day 9 — the check-in: "Should we keep sending you plant tips? Click to stay. If we don't hear from you, we'll stop emailing next week."
- Day 16: anyone who didn't click is unsubscribed from marketing emails. Their purchase history stays, so if they buy again they can rejoin.
What results to expect
Win-back campaigns usually bring back only a portion of inactive subscribers — and that's fine. The real win is twofold: the people who return are genuinely interested again, and your list gets healthier, which helps every future email reach the inbox. Track how many people clicked "keep me subscribed", how many bought, and whether your overall click rate rises after the clean-up.
When not to remove people
Keep transactional contacts (customers with open orders or active accounts) — just stop sending them marketing emails if they don't engage. And never remove people from your suppression list: unsubscribed addresses must stay unsubscribed.
Subject lines for win-back emails
The subject line does most of the work in a win-back series, because these subscribers have stopped opening. Be honest and direct:
- "Do you still want to hear from us?"
- "We've changed a few things since you last visited"
- "Here's 15% off, just because we miss you"
- "Should we stop emailing you?"
- "Last email from us (unless you say otherwise)"
Avoid tricks like fake "Re:" or "Your order" subject lines — they create complaints from exactly the people you're trying to win back, and they may break the law.
Personalise the reason to return
Win-back emails work better when they reflect what the person once cared about:
- Past buyers: show what's new in the category they bought from.
- Content readers: share your three most popular articles or tips since they last engaged.
- Local customers: invite them to an event or remind them what's changed in-store.
Timing the series
Space the three emails about a week apart, and stop sending your regular campaigns to this segment while the series runs. Anyone who clicks moves straight back to your normal list; anyone who doesn't respond after the final email should be removed or suppressed.
In Reepio
Create a segment for "no clicks in the last 180 days", use it as the audience for a win-back automation, and let Reepio's engagement scores show who's drifting away. Bounces and complaints are removed automatically. Start free.
Frequently asked questions
How long before a subscriber counts as inactive?
It depends on how often you send. Around 90 days without engagement for weekly senders and about six months for monthly senders are common starting points.
Should I delete inactive subscribers?
After a win-back campaign, stop sending marketing emails to those who still don’t engage. It improves deliverability for everyone else on your list.
Do opens count as activity?
Use clicks as the main signal. Apple Mail Privacy Protection can register opens automatically, so opens alone may overstate activity.