OWA doesn't include the ability to insert images into signatures. This is because inserting an image from the local computer won't do much good when you access OWA from another computer and OWA doesn't have the capability to store it online for you.
However, you can create a signature that contains an image, provided the image is on a web server accessible from the Internet and you paste the rendered HTML into the signature.
Note: This method will not work if you have the S/MIME Control installed. Images will be sent as text links. Check in the Options, Email Security section.
You need view the image code in a browser and copy it. For example, I use the code below to insert the site's logo into messages I send from OWA but I need to copy the image as it appears in a browser.
<IMG height=36 alt="Slipstick Systems Outlook and Exchange Solutions Center" hspace=8 src="http://www.slipstick.com/images/sliplogo.gif" width=150 vspace=8 border=0>
Also note that you need to use IE when you send messages from OWA in older versions of Exchange Server as only premium OWA supports HTML messages. Other browsers use OWA light and the image will not be included because OWA light is plain text only. Note that Exchange 2010′s OWA supports HTML in most browsers.
If you are using a corporate logo that is published on your website, you can right click on it and choose Copy. Otherwise, create an HTML page containing the image and view it in a browser, Then right click and copy the image.
To make you own HTML page, upload the image to a web server then make your signature in an HTML editor.
If you don't have an HTML editor, copy the code below and paste it into Notepad. Replace my URLs with the URLs to your image and website. Change the height and width to match the height and width of your image. Save as signature.htm.
Go to Windows Explorer and find signture.htm. Double click to open it in IE. Right click on the image and choose Copy.
<DIV><FONT face=tahoma size=2><a href="http://www.slipstick.com/"><IMG alt="Slipstick Systems Outlook and Exchange Solutions Center" src="http://www.slipstick.com/images/sliplogo.gif" /></a></FONT></DIV>
If you don't want to make the image clickable, remove <A href="http://www.slipstick.com/index.htm"> and </A> from the code.
After copying the image, go into E-mail Signature in OWA's Options and paste the signature in place.
You may see the picture placeholder in your signature in both the signature editor and when composing messages. It will show in the recipients messages, provided they allow downloaded content. Otherwise, they'll see the picture placeholder too.
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