Email template image not filling header

If you have an issue where the header image is not filling all the assigned space, it will give a white line under the image as it doesn't fill the entire space. 

To resolve: 

Add the below code to the email template:

Add style to the very top of the page and add the class = logo-img to the cell containing the logo merge tag. 

<style> td.logo-img img { min-width: 100% !important } </style> 

<td align="center" class="logo-img"><merge.logoimg /></td></tr>