Getting custom fonts to render in email deliveries

Hello,

I am trying to utilize custom fonts within our email templates/deliveries. However, the custom font is not displaying properly within the ACC client inside the preview, as well as the actual email send.

I have the CSS within the email html within a <style> element inside the <head> section, and using the @2375939-face rule. The src:url is referencing a public url.

example:

@2375939-face {
font-family: 'myFont';
src: url('https://font_url_omitted.net/myFont.eot');
font-weight: normal;
font-style: normal;
mso-font-alt: 'Arial';
}

Are there known issues with doing this method for email deliveries? I also have the font files (eot, woff, woff2, ttf) themselves, but am unsure where and how to store them within the adobe server and/or client, and how to reference them within the delivery template.

Thanks in advance,

Kevin