| text-decoration-color:red | Lorem ipsum dolor sit amet |
| text-decoration-thickness:5px; | Lorem ipsum dolor sit amet |
| text-underline-offset:5px; | Lorem ipsum dolor sit amet |
| -webkit- prefixes | Lorem ipsum dolor sit amet |
| text-decoration:underline red; | Lorem ipsum dolor sit amet |
| text-underline:#ff0000 thick; | Lorem ipsum dolor sit amet |
text-underline is the proprietary equivalent in Microsoft Outlook.
caniemail.com, 2020.