One Smart Tactic to Instantly Boost Your Email Open Rates
You’ve spent time crafting the perfect email: the copy is clear, the subject line is sharp, and your call-to-action is on point.
But then… only 12% of your audience opens it.
That’s not just discouraging — it’s a waste of your effort, your content, and your opportunity to build trust with your list. Luckily, there’s a simple tactic that can change that almost overnight:
Resend your email to subscribers who didn’t open it the first time.
Yes — with one extra click, you could boost your open rate by up to 40–50%, without rewriting a word.
Why Resending to Un-opens Works
Not everyone ignores your email because they don’t care.
People are busy. Emails get buried. Mobile reception drops. Timing clashes with real life.
Resending to non-openers gives your message a second chance — and often, that’s all it needs.
Real-World Example:
Let’s say you send an email to 5,000 subscribers.
- The first send gets a 22% open rate (1,100 opens)
- You resend it two days later to the remaining 3,900 unopens
- That second email gets a 15% open rate (585 additional opens)
Your total open reach is now 1,685 — a 53% increase in exposure from one campaign.
3 Rules for Resending Effectively
Resending is a smart strategy — but only if used properly. Here’s how to get the most from it:
1. Only Resend the Right Types of Emails
Resends work best for:
- Newsletters or content campaigns
- Blog updates
- Important announcements or service changes
- Time-sensitive event invites
Avoid resending offers that have already expired or emails that were part of an automated sequence (like onboarding or thank-you emails).
2. Wait 2–3 Days Before Resending
Give your audience enough time to open the original email. In the South African context, midweek (Tues–Thurs) resends around 10am or 5pm tend to work well, especially for mobile readers.
If you’re unsure, A/B test your resend timing over a few campaigns.
3. Keep the Subject Line — or Test a New One
You can either:
- Keep the original subject line for a clean test of timing
- Change it slightly to test what headline performs better
Examples:
- Original: “See How This SME Doubled Their Leads in 2 Weeks”
- Resend: “Missed This? Here’s How One Business Doubled Their Leads Fast”
Always monitor your unsubscribe and spam complaint rates — if they remain stable, you know resending is well received.
How Resending Supports List Health and ROI
ISPs like Gmail, Outlook and Telkom Webmail look at engagement — especially opens and clicks — to determine inbox placement.
The more positive signals you generate (from resends or otherwise), the stronger your sender reputation. That means:
- More emails delivered to the inbox (not spam)
- Higher trust with your subscribers
- More conversions from the same size list
And the best part? You’re not increasing your list size — you’re getting more value from the list you already have.
Final Thought - A High-Impact Habit You Can Start This Week
Resending to un-opens is one of the lowest-effort, highest-impact tactics in your email marketing toolkit. If you're using BulkMail, it takes just one click after your initial send.
Try it with your next campaign:
- Send your email as usual
- Wait 48–72 hours
- Resend it to those who didn’t open
- Compare the total open rate before and after
You may be surprised at how many extra eyes — and actions — that single resend delivers.