Send email with embedded image in custom workflow

Hello,

 I am looking for a assistance to get image embedded in Email body. Find the details below.

I have a visual studio workflow that send email notification when new item is added in to a custom list. The workflow is using Send Email activity to send an email.

Now we need an image to be embedded in the mail body. We have tried with HTML <img> tags but it is not working as expected(image is not appearing).

Note: This has to be done only with Send Email workflow activity, (without .Net class MailMessage).

 Any suggestion/solution.. 

Senthilrajan Kaliyaperumal