How to edit the preview digest layout

[Canapin (Coin-coin le Canapin)]

Not sure if it’s still the case, but the search gave me this:

Customizable Email Templates

Unfortunately the digest doesn’t use our normal template code as it uses a custom ruby template due to their being a lot of display logic present. You can now customize all the text though!

How to change the style of the email template of the digest?

Unfortunately the only part of the digest that is editable is the logo, which can be done via site settings. CSS in email is quite a tricky task, so we’ve hardcoded the styles in the template: https://github.com/discourse/discourse/blob/master/app/views/user_notifications/digest.html.erb