How to improve emails Open Rate and CTR

Boosting your Open Rate and CTR is key to gathering more reviews. In this guide, we’ll share simple strategies to optimize your emails and drive more customer interactions. Let’s get started! 🚀

To give you a benchmark, here’s an example of strong metrics. If yours are better, great job—keep it up! 😉

TL;DR

1. Test default app settings for subject and body.

2. Test on 50+ past or current orders.

3. Track the funnel: open rate → CTR → reviews received.

If your open rate is under 40%, experiment with another subject. Then check your CTR — if it’s below 8%, improve the message or add a coupon. Test changes with at least 50 emails.

Step 1: Subject Line

Your subject line is key—47% of recipients open emails based on it. Its impact varies by industry, so crafting it right is crucial. Here are some tips to boost open rates:

Good subject line	Bad subject line
Our default subject line “Order {{order id}} delivery check-in” achieves strong open rates of 50-70%.	Generic subject lines, like “We need your review” or “How did you like [product]?,” tend to have lower performance.
Mentioning a reward can boost open rates above 70%. “Order {{order_id}} delivery check-in. Promo code inside” ”Claim your bonus for order {{order_id}}” ”Order {{order_id}} - How did we do? Coupon inside” ”Order {{order_id}} awaits action - claim your bonus”	“We need your feedback” - Too generic and lacks a personal touch. “Please leave a review” - Comes off as a demand rather than a polite request. “Tell us what you think” - Generic and unexciting, offers no incentive or value. “Rate your experience” - Lacks engagement, doesn't build curiosity or interest. “Your opinion matters” - Overused and may be ignored due to familiarity

Step 2: Email body

Once opened, your email has about 8 seconds to engage the recipient. A well-crafted message can boost response rates by up to 50%. Here’s how to make it effective:

• Test the default template. On average, the default template with smiles achieves a CTR of 10%, so we recommend starting with it.

If you want to collect reviews after the product is delivered or use promo codes to increase review volume, try our Customer Reviews app. It can send review requests to multiple platforms at once—like Google, Trustpilot, and more.

👉 Check out real success stories here.

These case studies show how merchants increased review volume, improved ratings, and gained customer trust — all with minimal effort.

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