To access the variant title in an abandoned checkout email template, use the following syntax:
{% assign line_title = line.title %}
The line.title property automatically includes the product title and the variant title (e.g., “Product Name - Variant Name”) in checkout and order line items. There’s no need to separately append the variant title.
If you need additional variant properties, you can use:
{{ line.variant.title }}
This specifically retrieves the variant title only. Use it wherever required in your template.