Shopify email verification
gtapplications.net © Guillaume Thibault 2025

Posted At: Mar 20, 2026 - 458 Views

Shopify Email Bounce Rate: Why Your Emails Bounce and How to Fix It

You launch an email campaign from your Shopify store and your stats show an unusual bounce rate. Before you start second-guessing your subject line or design, the cause is often simpler: part of your contact list contains addresses that simply can no longer receive your messages.

Here is what that means in practice, and how to fix it.

Hard bounce vs. soft bounce: what's the difference?

A bounce is an email that cannot be delivered to the recipient. There are two types:

A hard bounce is a permanent failure: the address is incorrect, doesn't exist, or the receiving server has permanently blocked delivery. A soft bounce is a temporary problem: a full mailbox, an unavailable server, or a message that was blocked temporarily.

The distinction matters: a soft bounce can resolve itself. A hard bounce never will, and leaving it in your list actively damages your sender reputation.

Why a high bounce rate is dangerous

A high bounce rate increases the risk of your emails being filtered as spam. Domains that regularly send to invalid addresses see their reputation gradually decline, which affects the deliverability of all your marketing campaigns.

What threshold should you watch? Shopify states that a good email bounce rate is 2% or less.

The most common causes on Shopify

  • Bots: automated software that signs up through your forms with fake or invalid addresses. They drive up bounces and spam complaints without ever being real customers.
  • Unverified CSV imports: addresses imported from an old file without first checking that they are valid.
  • Disposable or temporary emails: used when creating a customer account, and often expired by the time of your first campaign.
  • Addresses that have become invalid: valid at signup, but deactivated since then.

How to reduce your bounce rate on Shopify

Shopify recommends verifying addresses before importing them, enabling hCaptcha and double opt-in, and then regularly monitoring bounces, spam complaints and engagement to protect deliverability.

In practice:

1. Check customer and subscriber emails in Shopify GTMailHygiene lets you scan your Shopify customers and subscribers, import CSV/XLSX files, then export a status, a score and reasons so you can spot invalid, disposable or risky addresses. The app can also add customer tags and metafields to make segmentation and automations in Shopify easier.

2. Clean up existing addresses via CSV If your list was imported from an external file or has existed for several months, a cleanup pass is a must. GTMail-Verif lets you verify a CSV file directly online, without going through Shopify.

3. Segment and remove hard bounces In Shopify Messaging, customers who bounce or report spam are automatically excluded from future campaigns. For other email tools, create a segment of the addresses that bounced, then remove them from your marketing list.

4. Enable hCaptcha on your forms Shopify recommends enabling hCaptcha on your store's forms to block automated bot signups.

5. Enable double opt-in Double opt-in confirms that the subscriber actually controls the address they entered. It is one of the most effective ways to prevent bounces at the source.

Summary

A high email bounce rate on Shopify isn't inevitable: it is the symptom of a contact list that hasn't been verified or maintained. The longer you wait, the more your sender reputation suffers, and the more your future campaigns pay the price.

Scan your Shopify customers and subscribers, segment statuses with tags and metafields, then clean up your CSV imports with GTMailHygiene before your next campaign.

Further reading:

Sources: