Problems with image alignment in ENewsletter PLugin

When I create an email with this plugin everything looks fine in the wordpress preview (images are aligned correctly). However when opened in Outlook or Gmail, the images are not aligned – text is in direct line with the images. CSS is below. Ive changed themes, tried new newsletters with different images, no luck.

<style type="text/css">

a:link, a, a:visited{color:#669966;}

a:hover { text-decoration: none !important; color:#669966;}

h1, h2, h3, h4, h5, h6{font-family:"open sans condensed"; padding: 0px 0px 10px 0px;margin:0px; color:#669966;}

.alignleft { display: inline; float: left; margin-right: 1.625em; }

.alignright { display: inline; float: right; margin-left: 1.625em; }

.aligncenter { clear: both; display: block; margin-left: auto; margin-right: auto; }

img.alignleft, img.alignright, img.aligncenter { margin-bottom: 1.625em; }