https://github.com/hteumeuleu/caniemail https://github.com/hteumeuleu/caniemail This is specifically focused at HTML specs/features, and a fork of https://gith

https://github.com/hteumeuleu/caniemail https://github.com/hteumeuleu/caniemail This is specifically focused at HTML specs/features, and a fork of https://github.com/Fyrd/caniuse https://github.com/Fyrd/caniuse Targeting HTML rendering engines which are email clients. Fortunately (at least for some of the newer features to be included) Links to MDN are available, and caniuse both link to we spec). CSS min for example is working draft. https://www.w3.org/TR/css-values-4/#math-function https://www.w3.org/TR/css-values-4/#math-function With 90% desktop/mobile browser general usage support, 50% email usage support.