What is wrong with the Codeigniter Email Class?

[eluser]tonanbarbarian[/eluser]
just because gmail has marked the message as spam does not mean it is not being sent as html
the reasons that gmail marks something as spam and varied
if you can move the message oout of the spam and the n look at it, is it in html?
try viewing the source, which in gmail is called Show Original.
does the header contain the following (or similar)
Content-Type: text/html; charset=us-ascii
Content-Transfer-Encoding: quoted-printable
Is the content source html?

If so then your email is producing HTML correctly and gmail is marking it as spam for another reason, i.e. the content of the message may be something suspicious such as a very short html message with no subject
try sending to other email accounts that are not in gmail and see if the message comes through as html
do not worry about html formatting to begin with just confirm the email is received as html and work on formatting later