Glossary
Term | Definition |
---|---|
Remailing | The practice of resending a modified version of an email campaign to subscribers who didn’t engage with the original send. |
Click-Through Rate (CTR) | The percentage of recipients who clicked a link in your email. |
Open Rate | The percentage of recipients who opened your email. |
AI Optimization | Use of artificial intelligence to analyze performance data and generate subject lines or content adjustments. |
MPP (Mail Privacy Protection) | Apple’s privacy feature that hides open behavior, affecting open rate accuracy. |
Segmentation | The process of dividing your email list based on behaviors, demographics, or engagement levels. |
Table of contents
Introduction

Email inboxes are crowded. Promotions, updates, newsletters—hundreds of messages are competing for a single click. So what happens when your well-crafted email goes unopened?
You try again. That’s where remailing comes in.
Remailing is not about spamming your list. It’s a tactical, data-informed method to give your campaign a second life—and ensure your message is seen, clicked, and acted upon.
This guide walks you through the core benefits of remailing, how to execute it properly, and why this strategy is essential to modern email marketing performance.
What Is Remailing and Why Should You Use It?
Remailing, or resend marketing, involves resending a version of your original email campaign to people who didn’t open or click the first one. It’s a chance to repackage your message, change your timing, and engage a new portion of your list.
Benefit | Explanation |
---|---|
Boost Engagement | Reach more subscribers with minimal effort. |
Maximize ROI | Get more out of the time and creative you’ve already invested. |
Improve Click Rates | Refocus your strategy on measurable, high-intent actions. |
Test Variations | Learn what subject lines, content, and send times perform best. |
Who Benefits Most from Remailing?
Remailing is a universally applicable strategy—but it’s especially useful for certain industries:
Industry | Use Case |
---|---|
Ecommerce | Promotions, new product drops, abandoned cart reminders. |
Higher Education | Application deadlines, event invites, webinar follow-ups. |
Travel & Hospitality | Time-sensitive offers, itinerary updates, last-minute deals. |
Nonprofits | Fundraising campaigns, event awareness, donor reminders. |
Professional Services | Content distribution, case study downloads, event invites. |
If your audience is busy or distracted (everyone is), remailing gives your message a second opportunity to connect.
Why Clicks Matter More Than Opens in 2025
Apple’s Mail Privacy Protection (MPP) has made open rates unreliable for iOS users. That’s why modern email strategies prioritize click-through rates.
Metric | Why It Matters |
---|---|
Click-Through Rate | Shows real engagement and intent. |
Conversion Rate | Tracks how many users take meaningful action. |
Revenue Per Recipient | Measures true ROI of each campaign. |
Clicks = proof of interest. Build your strategy around actions, not assumptions.
When to Monitor Opens Instead
Open rates are still useful for:
- Brand awareness or visibility-focused campaigns.
- Educational content where the goal is consumption, not clicks.
- Subject line testing (though even this is becoming less reliable).
Use open tracking selectively, depending on the campaign’s primary goal.
How to Implement Remailing in Your Strategy
Remailing is more than hitting resend—it’s about optimization.
1. Tweak Subject Lines
Subject lines are your first impression. Small changes can make a big impact.
First Send | Remail Version |
---|---|
“Don’t Miss Our Biggest Sale” | “Last Chance: Sale Ends at Midnight” |
“Exclusive Event Invite” | “Still Thinking About Attending?” |
Try curiosity, urgency, or benefit-driven phrasing. Avoid repeating the same message.
2. Adjust Send Time
If your audience didn’t open at 9 AM, try again at 6 PM or on a different day. Track send time performance across segments and test over time zones.
Best Practices:
- Wait 24–48 hours after the original send.
- Resend at a different time of day.
- Avoid sending to users who opened the original but didn’t click.
3. Modify the Content
Even small visual or structural changes can renew interest:
- Use a different hero image or call-to-action.
- Reorganize sections or highlight different products.
- Add urgency: “Only a few hours left,” or “Inventory is low.”
4. Segment and Suppress
Send your remail only to:
- Users who didn’t open the original.
- Users who opened but didn’t click (optional).
- Exclude those who already purchased, clicked, or unsubscribed.
Segmenting your resend improves your deliverability and avoids list fatigue.
5. Track Remailing KPIs
Your main focus should be:
- Click-through rate
- Revenue per recipient
- Change in engagement compared to the original send
Set benchmarks for both the initial campaign and the remail.
AI Tools to Enhance Your Remailing Strategy
AI tools like WinstonAI, Jasper, or Copy.ai can:
- Suggest alternate subject lines or CTAs.
- Rewrite content to avoid duplication.
- Help you personalize content for different list segments.
- Analyze email performance for optimization insights.
AI takes the guesswork out of your second send—and increases efficiency.
Best Practices for Remailing
Tip | Benefit |
---|---|
Use clear suppression rules | Avoid emailing users who already engaged. |
A/B test original vs. remail | Measure effectiveness clearly. |
Keep branding consistent | Your remail should feel like a continuation, not a new thread. |
Don’t resend every email | Use remailing selectively on high-priority campaigns. |
Remailing Strategy Table Example
Campaign Type | Original Subject Line | Remail Subject Line | Time Delay | Suppression Rule |
---|---|---|---|---|
Promo | “Weekend Sale Starts Now” | “Sale Ends Tonight – Final Hours” | 48 hours | Opened/clicked original |
Product Drop | “New Arrival: Limited Stock” | “Just Dropped – Still Available?” | 36 hours | Clicked original |
Webinar Invite | “Join Our Live Training” | “Only a Few Spots Left” | 24 hours | Opened original |
Visual and Interactive Content Suggestions
To improve SEO and engagement:
- Flowchart: Remailing Workflow (Original Send > Suppression > New Segment > Remail)
- KPI Table: CTR, Open Rate, Conversions (Before vs After Remail)
- Email Template Comparison: Original vs Remail Annotated Examples
- Gantt Chart: Remail Scheduling Strategy by Audience Segment
Frequently Asked Questions
1. How long should I wait before remailing?
Typically 24–48 hours. Time it based on your audience’s behavior and send cadence.
2. Should I always resend to non-openers?
No. Prioritize high-value campaigns and segment based on engagement to avoid spam complaints.
3. How many times can I resend the same campaign?
Once is usually sufficient. A third send should only be considered for urgent, high-impact campaigns.
4. Can remailing hurt deliverability?
If overused or sent without proper suppression, yes. Always segment remails carefully.
5. What metrics should I track for remails?
Focus on click-through rates, conversions, and revenue per recipient.
6. How do I know if remailing is working?
Compare engagement metrics between original and remail sends. Look for consistent lifts in clicks and conversions.
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