>I have a system that sends out emails to my client's customers (it's actually a WPF application written in C# with SQL Server database). Some of the emails have images in them (I use a RTF control from Telerik to load the image and embed it in the email). Some of the customers do not see the image, either it displays as a little box, or as lots of numbers as characters.
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>I have told my client that what they should do is have the image (or the entire email) available on their web site so that if anyone has these problems, they just click on a link in the email to see the email on-line. He uses Outlook for the Mac on his apple and it doesn't display the image, however his staff who use Outlook on Windows can see the images. If I send the images as an embedded image in an HTML email he can see it.
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>My client is not happy. He says that he wants me to guarantee that the image will be visible in the email without having a link to the image/email on-line.
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>Is this possible? I know there are a huge amount of email programs that people use, so how can I guarantee the image will display?

I also have that situation sometimes. This topic is actually interesting. I would also like to enhance my class to embed the image as is so they will be seen no matter what.