Hey @Boris 

Adding custom icons to your Klaviyo email templates can definitely enhance the visual appeal and provide a quick reference for your customers.

First, upload your icons to the Klaviyo media library. Then, go to the "Email Templates" section in Klaviyo and either create a new template or edit an existing one. Use the drag-and-drop editor to add a new section where you want your icons. You can use a two-column or three-column layout depending on how many icons you need. Drag the "Image" block into each column and upload your custom icons from the media library.

If you want to add text like "Fast Shipping" or "Secure Payment" below each icon, drag a "Text" block under each image and type your message. Adjust the size and alignment of your icons and text to get the look you want.

This Klaviyo article could help as well: Customizing Templates in Klaviyo.

Hope this helps :)