- From: Neil Jenkins <neilj@fastmail.fm>
- Date: Wed, 05 Feb 2014 12:25:59 +1100
- To: HTML for Email Community Group <public-htmail@w3.org>
On Tue, 4 Feb 2014, at 11:05 PM, Stefan Mies wrote: > Because an external style sheet is ideal when the style is applied to > many pages, not for only one page like an email. The main trouble with external stylesheets is the need to sanitise the CSS (at least in the webmail context) to prevent conflicts with UI styles, or security issues (remember you could put JavaScript in CSS in older versions of IE, *sigh*). It's possible to support, if the server downloads it, cleans it, and then passes it on to the client, but you have the same trouble as images (can be used for tracking) and it would have to happen out-of-band with the fetch of the rest of the email content, which makes all sorts of UI rendering issues harder. For these reasons, we don't currently support external stylesheets at FastMail, and I imagine most webmail vendors would join me in saying we'd rather they were avoided. Neil.
Received on Wednesday, 5 February 2014 01:26:21 UTC