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Product Customization Apps with Bulk Orders on Shopify

Send To Many preserves custom line item properties from engraving, monogramming, and personalization apps in both checkout and spreadsheet uploads.

If your store uses a product customization app for engraving, monogramming, custom printing, or other personalization options, those customizations work with Send To Many out of the box. Customization apps typically store their data as line item properties on each cart or order line item. Send To Many reads those properties and carries them through to every recipient order.

How it works​

When a shopper personalizes a product on your storefront (choosing an engraving message, uploading a logo, selecting a monogram style), the customization app saves those choices as line item properties on the cart item. These are key-value pairs that describe the customization.

During multi-recipient checkout, Send To Many picks up those line item properties from the cart and passes them along on the products in all the generated recipient orders. Each recipient gets the same customization the shopper selected. The properties appear on the order detail page, in fulfillment workflows, on packing slips, and in any downstream system that reads order data.

To make sure line item properties pass through to recipient orders, enable the line item property passthrough setting:

  1. In the Send To Many app, go to Settings.
  2. Look for the checkout settings section.
  3. Enable the option to carry line item properties through to payment and recipient orders.
tip

This setting applies to all line item properties on cart items, not just those from customization apps. If you also use bundle apps that attach line item properties, those will carry through too. See Using Bundle Apps with Send To Many for details on bundle compatibility.

Upload workflow​

You can also include customization data when uploading a spreadsheet, mapping columns to line item properties and attaching them to products during import. This is useful when each recipient needs different personalization: a unique card message, custom initials, or a specific logo.

For the full walkthrough, see Adding Product Customization to Bulk Orders During Upload.

What to verify after setup​

Before running a large Send with customized products, we recommend a quick test:

  1. Create a test Send with 2-3 recipients and your customization product.
  2. For checkout: add the product to your cart with customization options selected, then go through the multi-recipient checkout flow. For upload: include customization columns in your test spreadsheet.
  3. Check the generated recipient orders in Shopify admin.
  4. Confirm that each recipient order's line items include the correct customization properties.

If the properties appear correctly on recipient orders, your customization app integration is working as expected.

Next steps​

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