Using Google Webfonts in an HTML email I ran into font substitution issues in Outlook (2007,2010, etc.) that didn't occur prior to incorporating webfonts.It ignores the font stacks and goes right to Times.

This happens despite using inline fallback font stacks.

I've noticed similar issues that have been posted here before, but only as a general question, not tied to the use of webfonts. Previously all of the font fallbacks worked correctly. I'm using Litmus to conduct the email testing. 

Does anyone know why this might be happening? 

Link to Litmus: <https://litmus.com/pub/53a33c7/screenshots>

Originally linked fonts in CSS like so: 

```
<link href='http://fonts.googleapis.com/css?family=Arvo|Droid+Serif:400,700,400italic,700italic|Roboto:300' rel='stylesheet' type='text/css'>

```

I also tried using @font-face and self hosted files after seeing a possible [solution in another answer](https://stackoverflow.com/questions/13204812/outlook-2007-2013-not-rendering-css-font-family-declarations), but it didn't work (I updated class names too):

Except from font-face attempted workaround:

```
<!--[if !mso]><!--> 

@font-face {
    font-family: 'droid_serif';
    src: url('http://www.suissamesser.com/emails/rsdsa/DroidSerif-webfont.eot');
    src: url('http://www.suissamesser.com/emails/rsdsa/DroidSerif-webfont.eot?#iefix') format('embedded-opentype'),
         url('http://www.suissamesser.com/emails/rsdsa/DroidSerif-webfont.svg#droid_serif') format('svg'),  
         url('http://www.suissamesser.com/emails/rsdsa/DroidSerif-webfont.woff') format('woff'),
         url('http://www.suissamesser.com/emails/rsdsa/DroidSerif-webfont.ttf') format('truetype');

    font-weight: normal;
    font-style: normal;

}
<!--<![endif]-->

```

Outlook specific override CSS seems to work, but there are priority issues. I don't believe Outlook recognizes the !important declaration so I've been working towards more specific selections. However, I still don't understand why this is happening and if there is a simpler fix.

Outlook Font Override Excerpt:

```
    <!--[if gte mso 9]>
    <style>
        /* Target Outlook 2007 and 2010 */

            h1 { font-family: 'Georgia',serif !important; font-weight:normal; }
            h1 a { font-family: 'Georgia',serif !important; font-weight:normal; }
            h2 { font-family: 'Trebuchet MS',arial, helvetica, sans-serif; font-weight:normal; }
            h3 { font-family: 'Trebuchet MS',arial, helvetica, sans-serif; }
            .cover,img.cover,a.cover {
                display: block;
                visibility: visible;

                td { font-family: 'Trebuchet MS',arial, helvetica, sans-serif; } 

                .droid { font-family: 'Georgia', serif; }
}
    </style>
    <![endif]-->

```

Example of problematic code:

```
<td height="30" colspan="3" align="left" valign="middle" class="featured">
    <h2 style="text-align: left; padding: 0; margin: 0; color: #00799f; font-family: 'Roboto',arial, helvetica, sans-serif; font-size: 21px; font-weight: 100; background: none; border-bottom: 1px solid #b1d6e2; text-decoration: none; line-height: 36px; mso-line-height-rule: exactly;">cover story</h2>
</td>

```

UPDATE:

I've tried the suggestion in the answers to put the webfont import code inside conditional tags that exclude Outlook to no avail.

```
<!--[if !mso]><!-- -->
@import url(http://www.example.css);
<!--<![endif]-->

```

AND

```
<!--[if !mso]><!-- -->
@import url(http://fonts.googleapis.com/css?family=Oxygen);
<!--<![endif]-->

```

UPDATE II (SOLUTION): 

With all the help offered it's clear a number of seemingly minor issue all could cause this problem. The font-face method seems to be preferable to @import. Having the webfont name not be the same as the local font can cause the same issue, but that's just not what was happening with this particular email.

I had tried conditional code early on to hide the webfont import code from Outlook `<!--[if !mso]><!-->` altogether.

The problem was I did this within a CSS style tag in the head section. Simply placing this code in its own style tag as shown below made the difference.

I confirmed it's working as I was able to remove the extra workaround CSS code I had used to detect for version of Outlook 2007 and greater to restore h1, h2 values to the standard font stack. 

```
<!--[if !mso]><!-->
<style type="text/css">
@font-face {
    font-family: 'oxygenlight';
    src: url('http://www----/fonts/oxygen-light-webfont.eot');
    src: url('http://www.----/fonts/oxygen-light-webfont.eot?#iefix') format('embedded-opentype'),
         url('http://www.-----/fonts/oxygen-light-webfont.woff') format('woff'),
         url('http://www.-----/fonts/oxygen-light-webfont.ttf') format('truetype'),
         url('http://www.-----/fonts/oxygen-light-webfont.svg#oxygenlightlight') format('svg');
    font-weight: normal;
    font-style: normal;
}
</style>
<!--<![endif]-->

```