I frequently receive requests to modify the form labels and submission 'Thank You' message on Shopify contact and customer forms. Here's a quick step-by-step:
Steps to modify form labels and message on Shopify contact forms
1. Go to your Theme Editor under Online Store > Themes
2. Click the "Actions" button next to the Live theme
3. Select "Edit Languages"
4. Navigate to the "Contact" labels
5. Modify the preferred fields and click "Save" in the upper right
