How to Build Your Email List with Shopify

Your email list is one of the most valuable assets your Shopify business owns. Unlike social media followers or paid traffic, it's an audience you control — no algorithm changes, no platform fees, no dependency on third parties. Building it deliberately and sustainably should be a core growth priority for every ecommerce brand.

The Welcome Discount: Still the Most Effective Capture Tool

A popup offering 10-15% off in exchange for an email address remains the single most effective list-building tool for most Shopify stores. The key is in the execution: timing, design, and the value of the offer all matter enormously.

• Delay the popup by 5-10 seconds or until the user has scrolled 30-40% down the page
• A/B test the offer: 10% off vs free shipping vs £5 credit — the winner varies by brand
• Make the exit option visible — forcing engagement damages brand perception
• Use a two-step popup: first screen asks 'Want 10% off?', second screen captures the email
• Mobile popup should be a slide-up from the bottom, not a full-screen takeover

Capture at Every Touchpoint

Your popup is not the only place to capture emails. A holistic list-building strategy uses multiple touchpoints across the customer journey.

1. 1Checkout email field: Shopify captures the email at step one of checkout — ensure your Klaviyo consent checkbox is visible here
2. 2Post-purchase page: add an email capture for non-account customers using Shopify's thank-you page customisation
3. 3Footer newsletter signup: low conversion but captures high-intent visitors who scrolled to the bottom
4. 4Quiz or tool: a 'Find your perfect product' quiz captures emails while providing genuine value
5. 5Competitions and giveaways: effective for rapid list growth but attracts lower-quality subscribers — use sparingly
6. 6In-store or event capture: if you have physical presence, use Shopify POS to collect emails at point of sale

Optimising Your Popup with Klaviyo

Klaviyo's native signup forms integrate directly with your Shopify store and sync new subscribers instantly into your welcome flow. A few configuration tips that make a material difference:

• Suppress the popup for anyone already subscribed — don't show it to existing customers
• Set a cookie so the popup doesn't reappear for 30 days after dismissal
• Use Klaviyo's A/B testing to optimise copy, design, and offer over time
• Add an SMS opt-in field alongside the email field to capture both channels simultaneously

List Health and Deliverability

A growing list that isn't maintained will damage your email deliverability. Gmail and Outlook use engagement signals to decide whether your emails reach the inbox. Clean your list quarterly: suppress contacts who haven't opened in 180 days after a final re-engagement campaign. A smaller, healthier list will always outperform a large, disengaged one.

“The best list-building strategy is to earn the subscription — give people a genuine reason to hand over their email address and they'll actually open what you send them.”