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Optimize Your Review Request Email Subject Lines

2026-03-312 min read

Your review request email lives or dies in the inbox. If the subject line does not get an open, the review never gets written. Most stores send generic subjects like "Leave a review" or "How was your order?" — both easily ignored alongside dozens of other transactional emails.

Subject lines that reference the specific product perform 40-60% better than generic ones. "How is your [Product Name] working out?" feels personal and relevant. Including the customer's first name adds another lift. The subject should feel like a message from a person, not an automated system.

Timing and urgency matter too. "Your [Product Name] — quick question" creates curiosity. "Share your experience and help other shoppers" appeals to altruism. Avoid exclamation marks, ALL CAPS, and emoji-heavy subjects that trigger spam filters and feel salesy.

A/B test your subject lines across segments. What works for a $20 skincare product audience differs from a $500 electronics audience. Track open rates and review submission rates separately — a great open rate with low submissions means the email body needs work, not the subject.

Key Takeaways

  • Include the specific product name in your review request subject line
  • A/B test at least 3 different subject line formats per quarter
  • Personalize with the customer first name when possible
  • Track open rates and submission rates separately to diagnose issues

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