Preserve styles to modify the webmail container

[sanderkruger]

Emogrifier does a good job cleaning up the styles but this makes it impossible to add fixes for quirks in email readers that intend to modify known classes that the email reader uses.

For example, selectors .ExternalClass or #outlook a are widely used to fix some issues with Outlook. While these quirks are bound to disappear over time, since they are still used, it would be useful to be able to keep them in the emogrified HTML.

Emogrifier needs an option to leave certain CSS rules in the <style> section in the header.

[oliverklee]

What do you about a whitelist of styles that are specific to certain webmail containers?

(And doesn't Outlook properly filter/sandbox CSS that might affect the container? AFAIK, Google Mail does that.)

[sanderkruger]

I've seen a lot of articles that try to modify styles of the container of an email, so I think there is or has been a need/purpose for these. I have not been able to see any of these actually make a difference, so the examples I gave may be obsolete now.

Nonetheless, it seemed useful to me to have an option on emogrifier that tells it not to touch certain CSS rules and leave them in the head section, for example if you want to test new quirks. A whitelist could do the trick, allthough I think the best solution is a method to specify the rules you want preserved (so that future users can test new rules).

[oliverklee]

Sounds fair.