Here’s a brief look at the email design related discussion from yesterday’s Reddit AMA with the Google Inbox team. It’s a fairly interesting thread, as aside from some discussion about CSS and HTML support, there’s some wider insights in what users of an email client are interested in.
Will Inbox replace Gmail?
Will Inbox support other mail platforms (eg. Hotmail & Yahoo)?
What’s coming in the future?
and the big one for email designers, can we have improved HTML/CSS/Media Query support?
So TL:DR – media queries/better CSS may be on the way, but there’s lots to do before that.