D7: HTML email sent shows markup, how to fix? Im using Linode VPS but mails are routed via SMTP authentication to Google. Email is sending correctly and I'm using mail system and html mail with smtp authentication.

When I send test email as html to test mailbox, it shows markup and wont render to html. How can I fix this?

HTML Mail > Send Test

Creating HTML mail and sending it with SmtpMailSystem sending class. Output when viewed at gmail receiving it:

&lt;p&gt;This is a test letter.&lt;/p&gt;
&lt;p&gt;Lets add some &lt;u&gt;&lt;strong&gt;html&lt;/strong&gt;&lt;/u&gt;&lt;/p&gt;


So all markup is visible. What I'm missing?
Fixed.

Edited php.ini:
/etc/php5/apache2 # nano php.ini

-->

; For Unix only.  You may supply arguments as well (default: "sendmail -t -i").
sendmail_path = /usr/sbin/sendmail -i -t

Set mailsystem to htmlmail, voila.