Embed images into an HTML email with Xamarin.iOS - html

Question

I am trying to send an email from an iOS device (Using Xamarin) in an HTML format with images embedded in the body of the email.
Some solutions that I found online suggest to use an approach similar to the one shown here:
NSData ImgData = UIImage.FromFile(FileName).AsJPEG();
string img64baseStr = ImgData.GetBase64EncodedString(NSDataBase64EncodingOptions.None);
string srcStr = string.Format("data:image/jpg;base64,{0}", img64baseStr);
Using the code above I can see the pictures properly in the iOS Email client. However, when the email is sent I can't see the images on the receiving side.
There are other setbacks to this approach, but I can avoid getting into those in more details at this point.
I have also tried using the images as resources in the project. However, when I reference the pictures directly in the HTML in this form:
<img src="Pic1.png" width="700" height="500" alt=""/>
the linkage is broken and the email is missing the images.
How can I properly reference resource images in an HTML email?

Answer 1

So it seems like the approach described above, of converting the data object to a base64 string is deprecated by most email clients for security reasons and the email client will block Dada URIs that are arriving this way.
I found the question posted in the link below to be helpful for understanding why things weren't working for me:
base64 encoded images in email signatures
Specifically refer to the answer posted by #Shadow2531 and the discussion that followed it.
Finally, I was able to achieve what I wanted using the MailKit package that is available on NuGet.
The package has a pretty comprehensive documentation. Specifically for the problem I was trying to solve, take a look at this page:
http://www.mimekit.net/docs/html/CreatingMessages.htm
Good luck.