+ # 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">'