Connecting Klaviyo
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Open the Checkout Links app in your Shopify admin
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Go to Settings > Klaviyo
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Click Connect Klaviyo
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Sign in to your Klaviyo account and authorize the connection
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Once connected, you’ll see your Klaviyo account status on the settings page
The connection uses OAuth, so your Klaviyo credentials are never stored by Checkout Links.
Verifying the Connection
After connecting, the settings page shows your connected Klaviyo account, plus two sections:
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Customer shortcodes — each customer’s shortcode is saved to their Klaviyo profile as
checkout_links_shortcode. New customers sync automatically; click Sync shortcodes to add it to customers who already have a Klaviyo profile -
Email blocks — shows how many of the three Checkout Links blocks are installed in your Klaviyo content library
Ready-made email blocks
When you connect Klaviyo, Checkout Links automatically adds three ready-made content blocks to your Klaviyo content library:
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Checkout Links — Abandoned Cart CTA
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Checkout Links — Reorder CTA
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Checkout Links — Reorder Banner
Each block already has your store’s personalized checkout link built in, so you can drag it straight into any campaign or flow — no copy-pasting links. Search Checkout in Klaviyo’s content library to find them.
If you delete or break a block, go to Settings > Klaviyo in Checkout Links and click Reinstall blocks to reinstall all three.
Disconnecting
You can disconnect Klaviyo at any time from the same settings page. Click Disconnect and confirm. This won’t affect your existing Klaviyo flows, and links already in them keep working. New customers just stop getting a shortcode on their Klaviyo profile until you reconnect.
What You Can Do with Klaviyo
Once connected, you can set up:
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Abandoned cart recovery — Restore abandoned carts with incentive-powered checkout links
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Reorder links — Automated reorder reminders with one-click checkout
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Customer links — Pre-fill checkout info using Klaviyo customer data
Requirements
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A Klaviyo account (free or paid)
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Klaviyo must be connected to your Shopify store
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The Checkout Links app must be installed and set up