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How to embed an image in email body

, 3 Dec 2013 CPOL
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How to embed an image in email body

Usually when we are sending images in an email, we place the...

<img src="" alt="" />

...tag in the HTML email body and the 'src' of the image tag points to the HTTP URL of the image. To get this HTTP URL, the image has to be hosted somewhere, either on your own website or somewhere on the internet.

But in many scenarios, you don't have the HTTP URL to the image and you want to send the image in an email.

This kind of scenario occurs while sending images that are saved in the database or when sending the emails from a Windows application.

In these scenarios, you need to use the LinkedResource object to directly 'embed' the image in an HTML email and then send the email using our standard .NET 'MailMessage' class.

Here is the complete code to it - tested and working:

MailMessage Mail = new MailMessage();        

Mail.From = new MailAddress("");
Mail.Subject = "This is Image Test.";
Mail.Body = "This is the body of the email";
LinkedResource LinkedImage = new LinkedResource(@"J:\My Documents\Advika1.jpg");
LinkedImage.ContentId = "MyPic";
//Added the patch for Thunderbird as suggested by Jorge
LinkedImage.ContentType = new ContentType(MediaTypeNames.Image.Jpeg);

AlternateView htmlView = AlternateView.CreateAlternateViewFromString(
  "You should see image next to this line. <img src=cid:MyPic>", 
  null, "text/html");

SmtpClient smtp = new SmtpClient("", 25); 
catch (SmtpException ex)

Let me know if this post helps you.


This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


About the Author

aspnet -i
Web Developer
India India
Software developer by profession, working for a service and product based organisation in India.
Career graph:
Software Programmer since 2002.
Web Developer in ASP.NET since 2004.
I love reading the blogs and articles of technology experts. I love codeproject and stackoverflow .
I love to share knowledge and help the programmers. I appreciate if some body corrects my code or my concepts which helps me learn.

Comments and Discussions

QuestionOutstanding! Pinmemberspencepk25-Jul-14 6:58 
QuestionImage from an url Pinmemberankurtrue14-Dec-13 1:46 
QuestionDecent, but .. PinmemberDarek Danielewski2-Dec-13 11:17 
AnswerRe: Decent, but .. Pinmemberspencepk25-Jul-14 6:03 
GeneralRe: Decent, but .. PinmemberDarek Danielewski12-Aug-14 9:54 
GeneralThank you Jorge for the update. I will include it in my tip.... PinmemberB Birajdar19-Feb-12 20:40 
GeneralFive Man! Thunderbird not show any image embedded. Only a b... PinmemberJorge Valencia17-Feb-12 11:08 
GeneralThank you Jawed, skantg, drewman, Tushar ..Its the appreciat... PinmemberB Birajdar15-Feb-12 23:42 
GeneralReason for my vote of 5 Good Work PinmemberTushar_Patil15-Feb-12 1:14 
GeneralReason for my vote of 5 Nice one! This issue has had me scra... Pinmemberdrewman51509-Feb-12 2:10 
GeneralReason for my vote of 5 a good tip, often needed. Pinmemberskantg8-Feb-12 22:30 
GeneralReason for my vote of 4 Nice tips..i have seen loads of user... Pinmemberjawed.ace7-Feb-12 2:35 

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