Add a note under the product details to WooCommerce order emails.
WooCommerce Tips
Add info to WooCommerce order emails
Add a custom note to your WooCommerce emails. Use actions instead of changing templates. It can be simple or complex.
Customise “Choose an option” dropdown item
Make the variation dropdowns user friendly by changing “Choose an option” to use the attribute name and be more clear.
Set max or min cart weight
Set an upper or lower weight limit for the shopping cart and prevent checkout.
Demystifying Hooks, Actions & Filters – A quick run through
Hook and actions are the means to expand WordPress. They are *everywhere* but they are *not* scary. I promise.
Free Shipping when One Item in Cart
Apply a free shipping coupon when the cart contains only one item.