Every email list has them: subscribers who signed up months (or years) ago, opened a few emails, and then quietly went silent. They’re not unsubscribing, they’re just not opening. And with Black Friday and Christmas campaigns just around the corner, October is the right time to do something about it, rather than sending your biggest offers of the year to an audience that’s stopped listening.
Here’s how to approach a re-engagement campaign properly.
Start by Defining “Inactive”
Before you can win anyone back, you need to know who you’re actually talking to. Most platforms let you segment by engagement, so pull a list of subscribers who haven’t opened or clicked in the last 60 to 90 days. Be specific rather than guessing; a list that’s too broad will dilute your results, and one that’s too narrow won’t move the needle. It’s also worth separating “never engaged” subscribers from “used to engage, then stopped,” as they often need slightly different messaging.
Lead With a Genuine Reason to Come Back
“We miss you” emails rarely work on their own. Give people an actual reason to re-engage: a helpful resource, a preview of what’s coming in Q4, or a simple, honest question about what they’re interested in hearing about. The goal isn’t just to get an open, it’s to remind them why they signed up in the first place. If you offer a discount as part of this, make sure it feels like a genuine thank-you for sticking around, not a blanket offer available to everyone anyway.
Pay Attention to Your Subject Line
Inactive subscribers are, by definition, the audience least likely to open your email, so the subject line is doing more work than usual. Avoid anything that sounds like every other promotional email in their inbox. A direct, slightly personal line, referencing the fact that it’s been a while, or asking a simple question, will often outperform anything that reads as a hard sell.
Make the Ask Easy
If you want someone to click, don’t bury it. One clear call to action, whether that’s “update your preferences,” “grab this resource,” or “shop the new collection,” works far better than several competing options in one email. Every extra choice you add is a chance for someone to click away without doing anything at all.
Give It a Short, Clear Sequence
A single email rarely does the job. A short sequence of two or three emails over a week or two, each with a slightly different angle, gives people more than one chance to re-engage without overwhelming their inbox. Vary the approach across the sequence: perhaps the first email offers value, the second asks a direct question, and the final one is a clear “last chance to stay subscribed” before you consider removing them.
Know When to Let Go
This is the part most businesses avoid: if someone doesn’t respond to your re-engagement sequence at all, it’s usually time to remove them from your active list. It feels counterintuitive to shrink your numbers, but a smaller, engaged list will always outperform a large, unresponsive one, both for deliverability and for actual results. Holding on to thousands of subscribers who never open anything doesn’t help your open rates, your sender reputation, or your bottom line, it just makes the numbers look bigger on paper.

Why This Matters Before Q4
Email providers pay close attention to engagement when deciding whether your emails land in the inbox or the spam folder. A list full of subscribers who never open anything signals to providers that your content might not be wanted, which can affect deliverability for your entire list, including the subscribers who are genuinely engaged.
Going into your busiest sending period of the year with a cleaner, more engaged list means better deliverability, better open rates, and ultimately, better results from the campaigns that matter most. A re-engagement push in October gives you time to clean things up before the pressure of Black Friday and Christmas sending, rather than trying to fix deliverability issues mid-campaign when it’s already too late.
If you’d like a hand auditing your list or building a re-engagement sequence before the Q4 rush, that’s exactly the kind of thing we help with at 10X. Get in touch and let’s get your list in shape before the busiest months of the year arrive.

