I have added some improvements , Split the User Name and added uppercase to First and Last Name, I have also include a nicer email format , here is the updated powershell
$outlook = New-Object -comObject Outlook.Application
$emailadd=$args[0]
$UserName=$args[1]
$CleanUN=$UserName.replace('.',' ')
$words=$UserName.split(".")
$UserName=""
foreach ($word in $words){
$givenname+=$word.substring(0,1).toupper()+$word.substring(1)+" "}
$givenname=$givenname.trim()
$Body=@"
<p> </p>
<table style="border: 1px solid #FF6600; width: 650px;" border="0" cellspacing="0" cellpadding="2">
<tbody>
<tr>
<td style="width: 10px;" bgcolor="#FF6600"> </td>
<td style="width: 53.1562px;" align="left" bgcolor="#FF6600"><img src="LOGO" alt="" width="70" height="70" /></td>
<td style="width: 286.844px;" align="left" bgcolor="#FF6600">
<h2 style="color: white; font-family: 'Arial',sans-serif;">Your Team Name</h2>
</td>
<td style="width: 297px;" align="right" bgcolor="#FF6600"><img src="LOGO" alt="" /></td>
</tr>
<tr>
<td style="width: 647px;" colspan="4">
<p><span style="color: #FF6600; font-family: 'Arial',sans-serif; font-size: 16.0pt;">Import Email </span></p>
<p><span style="font-size: 14px; background-color: white; font-family: 'Arial',sans-serif;">Dear $givenname</span></p>
<p><span style="font-size: 14px; background-color: white; font-family: 'Arial',sans-serif;">To dread of soment a contumely, thought his rath the hue of thous calamity opposings a weathe have, an.</span></p>
<p><span style="font-size: 14px; background-color: white; font-family: 'Arial',sans-serif;"></span><span style="color: #FF6600; font-family: 'Arial',sans-serif; font-size: 14.0pt;">To dread of soment a contumely, thought his rath the hue of thous calamity opposings</span></p>
<p><span style="font-size: 14px; background-color: white; font-family: 'Arial',sans-serif;">Thus fortune, the of? Thers thers the native heir currenterprises of? To dread of soment a contumely, thought his rath the hue of thous calamity opposings a weathe have, and thing end sweathem? To be, to say wear, ther 'tis rath, ther 'tis no takes us againsolution. Ther be, and, but the arms all; and lose ills be: to gream: ay, and morthy to sleep of action: whethe name whethe with who would be, that man's devoutrageous pangs and than fly take and their the who would by of some wish'd. Ther resolen.</span></p>
<ul>
<li><span style="font-size: 13px;"><span style="color: #FF6600; font-family: Arial,sans-serif;">end name with the pangs of</span></span></li>
<li><span style="font-size: 13px;"><span style="color: #FF6600; font-family: Arial,sans-serif;">end name with the pangs of</span></span></li>
<li><span style="font-size: 13px;"><span style="color: #FF6600; font-family: Arial,sans-serif;">end name with the pangs of</span></span></li>
<li><span style="font-size: 13px;"><span style="color: #FF6600; font-family: Arial,sans-serif;">end name with the pangs oft &</span></span></li>
<li><span style="font-size: 13px;"><span style="color: #FF6600; font-family: Arial,sans-serif;">end name with the pangs of.</span></span></li>
</ul>
<p><span style="color: #FF6600; font-family: 'Arial',sans-serif; font-size: 14.0pt;">Further Support</span></p>
<p><span style="font-size: 14px; background-color: white; font-family: 'Arial',sans-serif;">cowardels beary from whethings of </span><span style="font-size: 13px;"><span style="color: #FF6600; font-family: Arial,sans-serif;"><a href="mailto:You@You.Comt"><span style="font-family: 'Arial',sans-serif;">You@You.Com</span></a></span></span></p>
<p> </p>
</td>
</tr>
<tr>
<td style="width: 647px;" colspan="4" align="center" bgcolor="#FF6600" height="20">
<p><a style="color: #fffff6; font-family: 'Arial',sans-serif; font-size: 8.0pt;" href="mailto:You@You.comt">Your Team</a></p>
</td>
</tr>
</tbody>
</table>
</tr>
<tr>
<td colspan="4" bgcolor="#FF6600" height="20" align="center"><p><a href="mailto:You@You.comt" style="color:#FFFFF6; font-family:"Arial",sans-serif; font-size:8.0pt">but there's the </a></p></td>
</tr>
</tbody>
</table>
"@
$mail = $outlook.CreateItem(0)
$mail.To = "$emailadd"
$mail.Subject = "Asset Reboot Required"
$mail.HTMLBody = "$Body"
$mail.save()
$inspector = $mail.GetInspector
$inspector.Display()
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