Hi - I want to have a red underline on all my links. This works in Gmail and Yahoo on desktop but I can't get it to work on mobile at all, or in Outlook. The underline just turns black.

This is the code I am using:

a {
            text-decoration: underline;
            text-decoration-color: #E22237;
            color: #292929;

I tried putting !important on the text-decoration-color, but it still didn't work. Is this a thing that is even possible?