Want monospaced fonts in Mailplane on your Mac? Try using this as a custom stylesheet, selectable via the Preferences:
.qIKyDc,
.mMl8gd,
.rSfjbb,
.iE5Yyc,
div.msg div.mb,
div.ArwC7c,
div.ckChnd textarea,
textarea.tb,
td.ct {
font-family: Monaco, monospace !important;
font-size: 12px !important;
}
Gathered from various net sources (such as this), and from poking around in existing stylesheets (such as this one). Easily customized.
UPDATE 3/8/2009: This appears to have been broken by a recent Gmail update; will have to track down the new correct CSS selectors…
Twittering...
- win the ultimate $10,000 canon 5d mk2 camera setup to celebrate the release of camera+ for iphone at wwdc http://tinyurl.com/camplus 2010-06-09
- A chance to win a free iPad, or 1 of 4 iPad games from @AmbrosiaSW! Follow us and RT to win! #Ambrosia http://bit.ly/ASWiPad 2010-04-06
- Sorry to my followers, but this offer of a FREE IPAD was just too good! Follow and RT to win! #Ambrosia http://bit.ly/ASWiPad 2010-04-05
- Win one of 20 Apple iPads given away by renowned company DreamHost! Enter here http://bit.ly/theipadcontest 2010-04-01
- @iphonedev07 ODROID for Android... makes me wonder... has anyone grabbed the names, ORDROID? EXORDROID? in reply to iphonedev07 2009-12-11
- More updates...

