Without this Outlook and Windows Mail don't honour the font set at the top level. Note that this change predates all the screenshots I uploaded to the wiki on 2017-02-02, I'd just forgotten to commit them.
end
def style_message(html)
- html.gsub /<p>/, '<p style="color: black; margin: 0.75em 0">'
+ # Because we can't use stylesheets in HTML emails, we need to inline the
+ # styles. Rather than copy-paste the same string of CSS into every message,
+ # we apply it once here, after the message has been composed.
+ html.gsub /<p>/, '<p style="color: black; margin: 0.75em 0; font-family: \'Helvetica Neue\', Arial, Sans-Serif">'
end
end