Shopify flash sales: a step-by-step setup guide

Shopify is a popular platform for running flash sales, and for good reason: its discount system is flexible, its checkout is fast, and its app ecosystem is huge. Here's the process we recommend for setting up a flash sale that converts.

Step 1: Create your discount in Shopify

Head to Discounts → Create discount in your Shopify admin. Shopify first asks you to pick a discount type: Amount off products, Amount off order, Buy X get Y or Free shipping. Then choose a percentage or fixed value, and set the start and end dates carefully. The end date is what will drive your countdown timer.

Step 2: Connect your store to flashtimer (Pro and up)

flashtimer isn't installed from the Shopify App Store. You connect your store from flashtimer instead:

1. In flashtimer, go to Settings → Integrations → Shopify and enter your shop domain (your-store.myshopify.com).
2. Click Connect with Shopify. Shopify asks you to approve the access flashtimer needs, then sends you back. There's no API key or custom app to create.
3. Leave the sync toggles on: Auto-create timers, Auto-update timers and Auto-archive timers.

With automation on, flashtimer creates one timer for every Shopify discount that has an end date. If you change the discount's end date, the timer's deadline stays in sync. If you delete the discount, the timer is archived. Each discount gets its own timer and its own GIF URL, which you paste into the emails promoting that discount. The Shopify integration page covers the rest, including Shopify Messaging.

Step 3: Build your email sequence

• Announcement email: Sent at sale start. The timer shows the full duration.
• Mid-sale nudge: Sent around the halfway point. Reinforces the deadline.
• Final hours email: Sent a couple of hours before close. A timer approaching zero often drives some of the strongest response of the sequence.

Step 4: Prepare your landing page

Drive all email clicks to a dedicated sale landing page or collection, and make sure the discount applies cleanly at checkout.

If you're selling limited stock, a stock monitor (Business and up) can end the countdown early: it expires a timer when a product's stock drops to a threshold you set, so you never keep promoting an item that has sold out. (It doesn't display stock counts in the email; it controls when the timer expires.)

Step 5: Analyze and iterate

After the sale, check Shopify Analytics for revenue by source, and use UTM parameters on your email links so sales are attributed to the right send. Compare click rates across your three emails, and review your timer's views and clicks in flashtimer. The data from one sale is the brief for the next one.