Extra space on sides of images in outlook when creating HTML email - html

I have been scouring the internet for around 2 days now and I can't find anything about an issue. I am facing with extra space on the LEFT and RIGHT side of images in Outlook desktop.
The extra space, affects the ability of my table/columns to be displayed side by side. If I shorten the width of any cell/row/table to the exact width of that space (circled in red in image) they suddenly pop in side by side. It is this particular little space I can't figure out how to remove. It is like there is a default value set somewhere on something I am unaware of.
Sorry about some images not being uploaded anywhere, these ones weren't really important.
2 How it appears in every other email client.
3 How it is appearing in outlook only.
* {
margin: 0px 0px 0px 0px;
padding: 0px 0px 0px 0px;
border-spacing: 0px;
box-sizing: border-box;
}
#media only screen and (max-device-width: 480px) {
table[class=responsive] {
width: 330px !important;
}
}
#media only screen and (max-device-width: 480px) {
table[class=left] {
width: 330px !important;
}
}
#media only screen and (max-device-width: 480px) {
table[class=right] {
width: 330px !important;
}
}
#media only screen and (max-device-width: 480px) {
img {
width: 100% !important;
}
}
p {
padding: 10px 10px 10px 10px;
}
a {
color: #333333;
}
a:visited {
color: #000000;
}
<html>
<head>
<title></title>
<meta content="text/html; charset=iso-8859-1" http-equiv="Content-Type">
<meta content="text/html; charset=UTF-8" http-equiv="Content-Type">
<meta content="IE=edge" http-equiv="X-UA-Compatible">
<meta content="width=device-width, initial-scale=1.0" name="viewport">
</head>
<body style="font-family:'Trebuchet MS', Helvetica, Arial, sans-serif;">
<!-- CENTER TABLE -->
<table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr>
<td align="center">
<table width="660" border="0" cellspacing="0" cellpadding="0" class="responsive">
<tr>
<td bgcolor="#FFFFFF"><img src="10324612_ptgray.jpg" align="left" style="vertical-align: top; display:inline-block;"></td>
</tr>
<tr>
<td bgcolor="#666666" height="50">
<p style="text-align: center; color: #FFFFFF; font-size: 24px; line-height: 24px;"><b>THE JULY ISSUE OF <em>PHYSICS TODAY</em> IS AVAILABLE</b><br></p>
</td>
</tr>
<!-- SPACER -->
<tr>
<td height="20px"> </td>
</tr>
<tr bgcolor="#EEEEEE">
<td>
<table class="left" width="220" border="0" cellspacing="0" cellpadding="0" align="left">
<tr border="0" cellspacing="0" cellpadding="0" align="left">
<td border="0" cellspacing="0" cellpadding="0" align="left"><img src="https://i.stack.imgur.com/BVa1S.png" width="220" border="0" cellspacing="0" cellpadding="0" align="left" style="vertical-align: top; display: block; max-width: 100%;"></td>
</tr>
</table>
<table class="right" width="440" border="0" cellspacing="0" align="right">
<tr>
<td>
<p style="color: #000000; font-size: 12px; line-height: 14px;">Advertisement</p>
<p style="color: #333333; font-size: 20px; line-height: 24px;">THERE'S NO ESCAPE: LEAK-TIGHT GAS PUMPS</p>
<p style="color: #000000; font-size: 13px; line-height: 18px;">KNF double-diaphragm, oil-free pumps are designed for transporting and evacuating costly, high purity, rare and/or dangerous gases. The back-up safety diaphragm ensures ultra-low leak rates of <6×10^-6 L/sec, while other safeguards
prevent contamination from external influences. Options available.</p>
</td>
</tr>
</table>
</td>
</tr>
<!-- SPACER -->
<tr>
<td height="20px"> </td>
</tr>
<tr>
<td style="border: 1px solid #CCCCCC;">
<a href="#">
<table class="left" width="438" border="0" cellspacing="0" align="left">
<tr>
<td valign="middle" height="287">
<p style="font-size: 50px; line-height: 50px; text-align: center; padding: 0px 0px 0px 0px;">View the November Issue Online</p>
</td>
</tr>
</table>
<table class="right" width="220" border="0" cellspacing="0" align="right">
<tr>
<td><img src="pt-cover.jpg" style="vertical-align: top; display: block;"></td>
</tr>
</table>
</a>
</td>
</tr>
<!-- SPACER -->
<tr>
<td height="20px"> </td>
</tr>
<tr bgcolor="#EEEEEE">
<td>
<table class="left" width="220" border="0" cellspacing="0" align="left">
<tr>
<td><img src="https://i.stack.imgur.com/BVa1S.png" width="220" height="220" style="vertical-align: top; display: block;"></td>
</tr>
</table>
<table class="right" width="440" border="0" cellspacing="0" align="right">
<tr>
<td>
<p style="color: #000000; font-size: 12px; line-height: 14px;">WHITEPAPER</p>
<p style="color: #C8544B; font-size: 20px; line-height: 24px;">THERE'S NO ESCAPE: LEAK-TIGHT GAS PUMPS</p>
<p style="color: #000000; font-size: 13px; line-height: 18px;">KNF double-diaphragm, oil-free pumps are designed for transporting and evacuating costly, high purity, rare and/or dangerous gases. The back-up safety diaphragm ensures ultra-low leak rates of <6×10^-6 L/sec, while other safeguards
prevent contamination from external influences. Options available.</p>
</td>
</tr>
</table>
</td>
</tr>
<!-- SPACER -->
<tr>
<td height="20px"> </td>
</tr>
<tr style="color: #000000; font-size: 12px; line-height: 14px; text-align: center;">
<td>
<tr>
<td>
<p style="border-left: 5px solid #C8544B; font-size: 24px">Restoring sight with retinal prostheses</p>
<p style="border-left: 5px solid #C8544B;">Author or Department</p>
</td>
</tr>
<!-- SPACER -->
<tr>
<td height="20px"> </td>
</tr>
<tr>
<td>
<p style="border-left: 5px solid #C8544B; font-size: 24px">Large amplitude oscillatory shear: Simple to describe, hard to interpret</p>
<p style="border-left: 5px solid #C8544B;">Author or Department</p>
</td>
</tr>
<!-- SPACER -->
<tr>
<td height="20px"> </td>
</tr>
<tr>
<td>
<p style="border-left: 5px solid #C8544B; font-size: 24px">Who owns a scientist's mind?</p>
<p style="border-left: 5px solid #C8544B;">Author or Department</p>
</td>
</tr>
<!-- SPACER -->
<tr>
<td height="20px"> </td>
</tr>
<tr>
<td>
<p style="border-left: 5px solid #C8544B; font-size: 24px">Magnets separate mirror-image molecules</p>
<p style="border-left: 5px solid #C8544B;">Author or Department</p>
</td>
</tr>
<!-- SPACER -->
<tr>
<td height="20px"> </td>
</tr>
<tr>
<td>
<p style="border-left: 5px solid #C8544B; font-size: 24px">Concerns about aging plutonium drive need for new weapon cores</p>
<p style="border-left: 5px solid #C8544B;">Author or Department</p>
</td>
</tr>
</td>
</tr>
<!-- SPACER -->
<tr>
<td height="20px"> </td>
</tr>
<tr bgcolor="#EEEEEE">
<td>
<table class="left" width="220" border="0" cellspacing="0" align="left">
<tr>
<td><img src="https://i.stack.imgur.com/BVa1S.png" width="220" style="vertical-align: top; display: block;"></td>
</tr>
</table>
<table class="right" width="440" border="0" cellspacing="0" align="right">
<tr>
<td>
<p style="color: #000000; font-size: 12px; line-height: 14px;">Advertisement</p>
<p style="color: #333333; font-size: 20px; line-height: 24px;">THERE'S NO ESCAPE: LEAK-TIGHT GAS PUMPS</p>
<p style="color: #000000; font-size: 13px; line-height: 18px;">KNF double-diaphragm, oil-free pumps are designed for transporting and evacuating costly, high purity, rare and/or dangerous gases. The back-up safety diaphragm ensures ultra-low leak rates of <6×10^-6 L/sec, while other safeguards
prevent contamination from external influences. Options available.</p>
</td>
</tr>
</table>
</td>
</tr>
<!-- SPACER -->
<tr>
<td height="20px"> </td>
</tr>
<tr bgcolor="#EEEEEE" style="color: #000000; font-size: 12px; line-height: 14px; text-align: center;">
<td>
<p><strong>Help desk information:</strong><br><br>If you need technical assistance, please do not reply to this automated email; click here.</p>
</td>
</tr>
<!-- SPACER -->
<tr>
<td height="20px"> </td>
</tr>
<tr bgcolor="#EEEEEE" style="color: #000000; font-size: 12px; line-height: 14px; text-align: center;">
<td>
<p>This email has been sent to %%email%%. In case you are not able to click on the links above, please go to: http://physicstoday.advanced-pub.com</p>
<p>Physics Today is published by the American Institute of Physics, One Physics Ellipse, College Park, MD. 20740. Send publication questions to pteditors#aip.org. The information contained in this e-mail
message is intended only for the personal use of the recipient(s). For Information on American Institute of Physics' Privacy Policy please click here. We appreciate your interest in our publication and encourage you to contact us with
your comments or suggestions. Thank you!</p>
<p>To unsubscribe, please click here.</p>
</td>
</tr>
</table>
<!-- CENTER TABLE -->
</td>
</tr>
</table>
</body>
</html>

According to my test and search, it not img's reason, might be table.
You could refer to the below code:
<table cellpadding="0" cellspacing="0" height="40" width="238" border="0" style="border-collapse: collapse; margin: 0; font-family: 'HelveticaNeue-CondensedBold', 'Arial Narrow', Arial, Helvetica, sans-serif; font-size: 16px; text-align: center; max-width:238px; color: #ffffff; width:238px;height: 40px; mso-table-lspace:0pt; mso-table-rspace:0pt; background-color: #f2f2f2;">
<tbody>
<tr>
<td height="40" width="22" align="left">
<p style="mso-table-lspace:0;mso-table-rspace:0;margin:0;">
<a href="#" style="border: 0; text-decoration: none; color: #ffffff;" target="_blank">
<img height="40" src="ctaleftgrey.jpg" style="width: 22px; margin: 0; border: 0; padding: 0; text-decoration: none; height: 40px;" width="22" />
</a>
</p>
</td>
<td height="40" width="180" align="left">
<table border="0" cellpadding="0" cellspacing="0" height="40" width="180" style="border-collapse: collapse; margin: 0; border: 0; padding: 0; font-family: 'HelveticaNeue-CondensedBold', 'Arial Narrow', Arial, Helvetica, sans-serif; font-size: 16px; text-align: center; color: #ffffff; height: 40px; background-color: #ec6608; mso-table-lspace:0pt; mso-table-rspace:0pt; " valign="middle">
<tbody>
<tr>
<td height="40" style="height: 40px; font-family: 'HelveticaNeue-CondensedBold', 'Arial Narrow', Arial, Helvetica, sans-serif; font-size: 16px; text-align: center; color: #ffffff; background-color: #ec6608; mso-line-height-rule: exactly; line-height: 16px;">
<p style="mso-table-lspace:0;mso-table-rspace:0;margin:0;">
Text goes here
</p>
</td>
</tr>
</tbody>
</table>
</td>
<td height="40" width="36" align="left">
<p style="mso-table-lspace:0;mso-table-rspace:0;margin:0;">
<a href="#" target="_blank">
<img height="40" src="ctarightgrey.jpg" style="width: 36px; margin: 0; border: 0; padding: 0; text-decoration: none; height: 40px;" width="36" />
</a>
</p>
</td>
</tr>
</tbody>
</body>
For more information, please refer to this link:
Outlook table spacing in HTML email - no usual tricks working
Table style border- outlook 2010 adds an extra space

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How to remove outline with img tag in Outlook application

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One thin line shows above and below the img tag. I have highlighted
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#media only screen and (max-width: 639px) {
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padding-left: 50px !important;
padding-right: 50px !important;
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font-size: 24px !important;
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<img src="https://rahulshahui.github.io/pwa/images/shape-bottom.png" width="100%" style="display: block" />
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style="
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sans-serif;
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valign="middle"
style="padding: 8px 0"
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<a
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style="
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<td
align=""
valign="middle"
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class="footer-link-single"
>
<a
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>
<img
src="https://rahulshahui.github.io/pwa/images/FB-icon.png"
/>
</a>
</td>
</tr>
</tbody>
</table>
</td>
</tr>
</table>
</td>
</tr>
</table>
</td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
</td>
<td></td>
</tr>
</tbody>
</table>
</body>
</html>
[Below is the code link][2]
[2]: https://codepen.io/rahulFront/pen/oNpPvgZ
This looks like a border.
Try adding border-width:0; to the images, e.g.:
<img src="https://rahulshahui.github.io/pwa/images/shape-bottom.png" width="100%" style="display: block;border-width:0;" />

Outlook is not respecting my "button" background color

I have a content block for an email that is not functioning as I want it to in Outlook. The block also needs to work in mobile and should look like this in browser/desktop:
.
In all browsers this looks perfect, except Outlook. In Outlook, it removes the entire white background colour from the button (it actually reduces it down to the text content) and it looks god awful:
Here is my code for the box:
<table border="0" cellpadding="0" cellspacing="0" width="100%">
<tr>
<td align="center">
<table bgcolor="#f5f5f5" border="0" cellpadding="0" cellspacing="0" class="w-full" width="640">
<tr>
<td width="20"> </td>
<td align="center">
<table border="0" cellpadding="0" cellspacing="0" dir="ltr" width="100%">
<tr>
<td class="full" dir="ltr" valign="top" width="50%">
<table border="0" cellpadding="0" cellspacing="0" width="100%">
<!--TABLE WITH IMAGE PART-->
<tr>
<td height="15" style="font-size: 1px; line-height: 1px;"> </td>
</tr>
<tr>
<td align="center"> <img src="http://placehold.it/170x170" style="display: block; border: 0;" width="170"></td>
</tr>
<tr>
<td height="15" style="font-size: 1px; line-height: 1px;"> </td>
</tr>
</table>
</td>
<td class="full" dir="ltr" valign="top" width="50%">
<table align="center" border="0" cellpadding="0" cellspacing="0" width="100%">
<!--TABLE WITH TEXT AND TITLE PART-->
<tr>
<td style="font-size: 1px; line-height: 1px;" width="20"> </td>
<td height="15" style="font-size: 1px; line-height: 1px;"> </td>
<td style="font-size: 1px; line-height: 1px;" width="20"> </td>
</tr>
<tr>
<td width="20"> </td>
<td align="left" class="font-22c" style="font-family:'Century Gothic', Helvetica, Arial, sans-serif; color: #7e828c; font-size: 20px; text-transform: uppercase;"> Lorem ipsum dolor</td>
<td width="20"> </td>
</tr>
<tr>
<td width="20"> </td>
<td height="20"> </td>
<td width="20"> </td>
</tr>
<tr>
<td width="20"> </td>
<td align="left" class="font-16c" style="font-family:'Century Gothic', Helvetica, Arial, sans-serif; color: #7e828c; font-size: 16px; line-height: 20px;"> Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.</td>
<td width="20"> </td>
</tr>
<tr>
<td width="20"> </td>
<td height="20"> </td>
<td width="20"> </td>
</tr>
<tr>
<td width="20"> </td>
<td class="cta" bgcolor="" width="" style="-webkit-border-radius: 0px; -moz-border-radius: 0px; border-radius: 0px; border: 0px;font-family: Century Gothic; padding-top: 0px; padding-bottom:0px; font-weight:;"> <a class="cta" href="http://www.example.com" style="padding: 10px; width:150px; display: block;text-decoration: none; border:0 ; text-align: center;font-weight: bold; font-size: 14px; font-family: Century Gothic, Helvetica, Arial, sans-serif; color: #8b8b93; background: #ffffff; border: 1px solid #8b8b93; -moz-border-radius: 4px; -webkit-border-radius: 4px; border-radius: 4px; line-height:30px;">LORUM IPSUM</a> </td>
<td width="20"> </td>
</tr>
<tr>
<td style="font-size: 1px; line-height: 1px;" width="20"> </td>
<td height="15" style="font-size: 1px; line-height: 1px;"> </td>
<td style="font-size: 1px; line-height: 1px;" width="20"> </td>
</tr>
</table>
</td>
</tr>
</table>
</td>
<td width="20"> </td>
</tr>
</table>
</td>
</tr>
And the class CTA is as follows:
cta {
margin: auto;
display: inline-block;
background:#ffffff !important;
}
/* BUTTON STYLES */
cta {
padding: 15px 15px;
width: 150px;
font-family: 'AvantGarde-demibold', 'Century Gothic', 'Arial Bold', Arial, sans-serif !important;
font-size: 14px;
font-weight: bold;
color: #8b8b93;
background: #ffffff !important;
border: 1px solid #8b8b93;
font-weight: bold;
align-content: center;
}
Unfortunately it requires a lot more code than it should to get a button displaying well and being clickable in Outlook. Something like this should do the trick (no CSS in the <style> necessary unless you want to do :hover effects):
<!-- Button : BEGIN -->
<table role="presentation" cellspacing="0" cellpadding="0" border="0">
<tr>
<td style="border-radius: 3px; background: #FFFFFF; text-align: center;">
<a href="http://www.google.com" style="background: #FFFFFF; padding: 15px; border: 1px solid #8b8b93; font-family: 'AvantGarde-demibold', 'Century Gothic', 'Arial Bold', Arial, font-size: 14px; line-height: 1.1; text-align: center; text-decoration: none; display: block; font-weight: bold;">
<span style="color:#8b8b93;">A Button</span>
</a>
</td>
</tr>
</table>
<!-- Button : END -->
Honestly, the only way I've been able to get outlook HTML to look the way I want is to hand generate the HTML using roughly HTML2 standard tags and properties and not using CSS at all. Some CSS renders, but it's really hit or miss.
So I think is better to directly set the background-color to your Html tag than in your css file

Width not working on table cells

For some reason when I set the width for a cell in a table it does not affect the width of the cell. FYI I'm using inline styles for mailers.
<table cellpadding="0" cellspacing="0" width="100%">
<tr>
<td align="center">
<table cellpadding="0" cellspacing="0" width="550" style="width: 100%; max-width: 550px; text-align: center; border: 1px solid #003a4b;">
<tr>
<td style="padding-top: 10px;"><span style="font-family: helvetica, sans-serif; font-size: 37px; font-weight: bold; color: #93d600; border-bottom: 1px solid #003a4b;">Hunters Conference 2017</span></td>
</tr>
<tr>
<td width="80%" style="padding: 20px 0; background-color: blue;"><span style="font-family: helvetica, sans-serif; font-size: 16px; color: #003a4b; background-color: red;">Fyber were honoured to attend and support such a fantastic conference, congratulations to everyone that won a prize on our wheel of fortune!</span></td>
</tr>
<tr>
<td width="80%" style="padding: 0 55px; padding-bottom: 20px;"><span style="font-family: helvetica, sans-serif; font-size: 16px; color: #003a4b;">We hope you all had a great day, we enjoyed catching up with everyone and it was nice to see our clients face to face. </span></td>
</tr>
<!--[if mso]>
<tr>
<td style="padding-bottom: 20px;">
<img src="https://gallery.mailchimp.com/b083c967cd22e35ab4ce75e7a/images/2c3e3b5e-9a9f-4864-a36f-6359b0dd4b75.jpg" alt="Spinning Wheel" width="550" style="width: 100%; max-width: 550px;">
</td>
</tr>
<![endif]-->
<!--[if !mso]><!-- -->
<tr>
<td style="padding-bottom: 20px;">
<img src="https://gallery.mailchimp.com/b083c967cd22e35ab4ce75e7a/images/19e810cd-df47-474b-aa47-3f33bf26922a.gif" alt="Spinning Wheel" width="550" style="width: 100%; max-width: 550px;">
</td>
</tr>
<!--<![endif]-->
</table>
</td>
</tr>
</table>
https://jsfiddle.net/xmbsemje/
td's default behaviour is to fill the width of the table, so if you only have one <td> per row <tr>, it would always go full width of the table no matter what you do.
One approach is to create a table inside that td and put the width on table instead. Also padding left and right doesn't work in emails, so creating tables with defined width and centering them is the best option.
The other approach would be to have spacer cells on left and right to give you padding space. I modified your code (just the text cells with blue/red and white background) following the first approach.
Please note: I didn't fix all of your code, just change a couple to get you started
<table cellpadding="0" cellspacing="0" width="100%">
<tr>
<td align="center">
<table cellpadding="0" cellspacing="0" width="550" style="width: 100%; max-width: 550px; text-align: center; border: 1px solid #003a4b;">
<tr>
<td style="padding-top: 10px;"><span style="font-family: helvetica, sans-serif; font-size: 37px; font-weight: bold; color: #93d600; border-bottom: 1px solid #003a4b;">Hunters Conference 2017</span></td>
</tr>
<tr>
<td align="center" style="padding: 20px 0; background-color: blue;">
<table border="0" cellpadding="0" cellspacing="0" style="width:80%;">
<tr>
<td align="left"><span style="font-family: helvetica, sans-serif; font-size: 16px; color: #003a4b; background-color: red;">Fyber were honoured to attend and support such a fantastic conference, congratulations to everyone that won a prize on our wheel of fortune!</span></td>
</tr>
</table>
</td>
</tr>
<tr>
<td align="center" style="padding: 20px 0;">
<table border="0" cellpadding="0" cellspacing="0" style="width:80%;">
<tr>
<td align="left"><span style="font-family: helvetica, sans-serif; font-size: 16px; color: #003a4b;">We hope you all had a great day, we enjoyed catching up with everyone and it was nice to see our clients face to face. </span></td>
</tr>
</table>
</td>
</tr>
<!--[if mso]>
<tr>
<td style="padding-bottom: 20px;">
<img src="https://gallery.mailchimp.com/b083c967cd22e35ab4ce75e7a/images/2c3e3b5e-9a9f-4864-a36f-6359b0dd4b75.jpg" alt="Spinning Wheel" width="550" style="width: 100%; max-width: 550px;">
</td>
</tr>
<![endif]-->
<!--[if !mso]><!-- -->
<tr>
<td style="padding-bottom: 20px;">
<img src="https://gallery.mailchimp.com/b083c967cd22e35ab4ce75e7a/images/19e810cd-df47-474b-aa47-3f33bf26922a.gif" alt="Spinning Wheel" width="550" style="width: 100%; max-width: 550px;">
</td>
</tr>
<!--<![endif]-->
</table>
</td>
</tr>
</table>
last td width 550px so not effect your width 80%;
so you can add width on span tag

A way to center TD in TR?

I am working on HTML email and trying to center a green TD in a white TR so that there's a 20px white margin on the left and right of the green box.
I tried setting TD width for the green portion and setting margin 0 auto but the green just expands to the width of the TR.
Tried putting in 2 more TDs to push the green TD into the center and that didn't work either.
Including the code snippet, am having trouble with the TR that has #a6d971.
<table cellspacing="0" cellpadding="0" border="0" width="600" height="" bgcolor="" style="margin: 0 auto;">
<tbody>
<tr>
<td style="margin: 0 auto;">
<img width="600" height="23" padding="0" src="assets/graphic_scalloped_top.png" alt="" style="display: block;" />
</td>
</tr>
<tr bgcolor="#fff" height="75">
<td valign="top" style="text-align:center;">
<p style="margin:0; padding-bottom: 3px; padding-top: 3px; color:#545d69; font-size: 24px; text-align:center; font-family: Arial, Helvetica;">
Regular sales happen every day
</p>
<p style="margin:0; padding-bottom: 3px; padding-top: 3px; color:#4bc1d6; font-size: 16px; text-align:center; font-family: Arial, Helvetica;">
9am - 11pm
</p>
</td>
</tr>
<tr bgcolor="#fff" height="75" padding="10">
<td bgcolor="#000" width="20"></td>
<td bgcolor="#a6d971" width="300" style="margin: 10;">
</td>
<td bgcolor="#000" width="20"></td>
</tr>
<tr bgcolor="#fff">
<td valign="top">
<table cellspacing="0" cellpadding="10" border="0" align="center" width="100%" bgcolor="#fff" style="">
<tbody>
<tr>
<td height="80" style="font-family: Helvetica, Arial, sans-serif; font-size: 18px; font-weight: bold; color: #555; background:url('assets/graphic_9am.png') no-repeat; background-position: 10% center; padding:10px; margin:0;">
<h3>Nine # Nine</h3>
<p>Fuel up! Dresses, tunics and other items including:</p>
</td>
</tr>
<tr>
</tr>
</tbody>
</table>
</td>
</tr>
<tr>
<td style="margin: 0 auto;">
<img width="600" height="23" padding="0" src="assets/graphic_scalloped_bottom.png" alt="" style="display: block;" />
</td>
</tr>
</tbody>
</table>
Switch to DIV's and CSS, most emails client supports styles pretty well, you can use a DIV inside your TD element, it'll be easy to center or do other things you might want.
For Example
<tr style="background-color: white;">
<td style="background-color: green;">
<div style="background-color: purple; margin-right: 20px; margin-left: 20px;">Content Here</div>
</td>
</tr>
Also note if you use DIV's you can also avoid tables.
Hack on top of a hack.
<table width="100%" cellpadding="0" cellspacing="0">
<tbody>
<tr>
<td style="border-left: 20px solid white; border-right: 20px solid white; background: green; color: white; text-align: center;">
This is stuff.
</td>
</tr>
</tbody>
</table>
http://jsfiddle.net/zy6GU/
Incidentally, the same thing should work with a DIV:
<div style="border-left: 20px solid white; border-right: 20px solid white; background: green; color: white; text-align: center;">This is a DIV.</div>
http://jsfiddle.net/zy6GU/1/
If you HAVE to use tables, might as well abuse them a little:
<table><tr align="center">
<td width="50%">one</td>
<td style="background-color:green">two</td>
<td width="50%">three</td>
</tr></table>
http://jsfiddle.net/mblase75/yntfu/
I'm not a CSS expert but this works for me (with no extra tags) :
<table>
<tr style="background-color: white; border: 1px solid black;">
<td style="background-color: green; display: block; margin: 0 20px;">
<!-- Content -->
</td>
</tr>
</table>
What are you talking about 'for emails'? You mean an email address, like Email Me? If so you'd want some css that centers the link in the TD, or in combination with colspan on the TD.