I have spent 22 hours trying to correct this issue, as I am relatively new, I thought I would give up and hand over to the experts.
I have tried to remove the additional line height added by outlook.com when you receive a message. I have tried adding the .ExternalClass as a style and then adding that to the body, but I am having no joy. I have probably added the class in the wrong position. Anyway, Id' love it if anyone could check the code for me
<style>
.ExternalClass * {line-height: 100%}
</style>
</head>
<body class="ExternalClass" style="font-family:Arial, Helvetica, sans-serif">
<table width="900px" border="0px" align="left" cellpadding="0px" cellspacing="0px">
<tr>
<td>
<table width="900px" border="0px" cellspacing="0px" cellpadding="0px" style="padding-bottom: 10px">
<tr>
</tr>
</table>
<table width="700" border="0" cellspacing="0" cellpadding="0" style="clear:both; overflow:hidden; padding-bottom: 40px">
<tr>
<td width="180">
<table width="154" height="154" border="0px" align="left" cellpadding="0" cellspacing="0" >
<tr>
<td bgcolor="#0099FF"><img src="http://www.internet.com/images/emails/pic.jpg" width="154px" height="154px" alt="Dan Tanner"></td>
</tr>
</table></td>
<td valign="top">
<table style="padding:0; margin:0;" width="520" border="0" cellspacing="0" cellpadding="0">
<tr>
<td><table width="520" border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="160" style="background-color:#173966; color:#FFF; font-size:26px; line-height: 26px; font-weight:bold; padding-left:10px;">My Name</td >
<td width="360"> </td>
</tr>
</table></td>
</tr>
<tr>
<td><table width="520" border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="15"></td>
<td width="115" style="background-color:#ee2375; color:#FFF; font-size:18px; font-style:italic; padding-left:10px">Co-Founder</td>
<td width="390"> </td>
</tr>
</table></td>
</tr>
<tr>
<td> </td>
</tr>
<tr>
<td> </td>
</tr>
<tr>
<td><table width="520" border="0" cellspacing="0" cellpadding="0" style="font-size:18px">
<tr>
<td width="90">Email:</td>
<td width="430">myemail@email.com</td>
</tr>
</table></td>
</tr>
<tr>
<td><table width="520" border="0" cellspacing="0" cellpadding="0" style="font-size:18px">
<tr>
<td width="90">Phone:</td>
<td width="430">0123456789</td>
</tr>
</table></td>
</tr>
<tr>
<td><table width="520" border="0" cellspacing="0" cellpadding="0" style="font-size:18px">
<tr>
<td width="90">Website:</td>
<td width="430"><a href="http://www.internet.com" target="_blank">www.internet.com</a></td>
</tr>
</table></td>
</tr>
</table>
</td>
</tr>
</table>
</td>
</tr>
</table>
</body>