It's an opinion piece from a guy who... apparently... wants to put image carousels into emails and is upset that GMail doesn't let him, and yet dares to intrude upon his beautiful iOS.
Hopefully no one exposes him to the ocean of old Outlook clients with crufty Word-based HTML renderers out there; he might die of a heart attack. Mentioning Pine/Alpine would be cruel as well.
Author here. Haha yes I write on experimental techniques like carousels mainly to get developers curious into the kinds of stuff they can do with just CSS.
I'm very aware of Outlook's backward HTML support, but at least its a single client. With Gmail, each of their clients has weird quirks that make it frustrating to code for.
As developers sometimes creating HTML emails are necessary, such as creating system generated reports for business users. Right now, the process is fraught with issues - including figuring out Outlook, so fixing this does not just benefit email marketers alone.
Hopefully no one exposes him to the ocean of old Outlook clients with crufty Word-based HTML renderers out there; he might die of a heart attack. Mentioning Pine/Alpine would be cruel as well.