Add the vacation message right in your theme using the inline block.
- In the Shopify admin, go to Online Store → Themes.
- Find your theme and clickCustomize.
- Use the top dropdown to pick the product template you want.
- Choose where the message should show, then click**+ Add block** or**+ Add section**.
- InApps, selectInline message.
- ClickSave.
If Inline is turned on for a rule, the message will appear in the spot you added.
Originally from our Help Center