With a new update about to roll (already rolling?) out, Gmail has added support for – amongst other things – media queries and non-inline styles. Along with that update however, they’ve also axed support for
Also gone is the support for
:checkedselectors. The only pseudo-class selector supported in Gmail and G Suite webmail is
:hover. In Inbox,
:hoverisn’t supported either.
This is a real shame imho, because it would prevent the creation of interactive e-mail using punched card coding. One of such mails is shown above. Yes, that really is an e-mail.
Embedded below a slidedeck by Mark Robbins (who kinda put it all together) on the subject, which he gave at CSS Day earlier this year:
And yes, even that entire presentation works *INSIDE* an e-mail.