I am using MailKit/MimeKit 1.2.7 (latest NuGet version).
I tried to embed an image in the HTML body of my email by following the sample from the API documentation (section "Using a BodyBuilder").
My current code looks like this:
var builder = new BodyBuilder();
builder.HtmlBody = @"<p>Hey!</p><img src=""Image.png"">";
var pathImage = Path.Combine(Misc.GetPathOfExecutingAssembly(), "Image.png");
builder.LinkedResources.Add(pathLogoFile);
message.Body = builder.ToMessageBody();
I can send this email and in fact the image is attached to the email. But it is not embedded.
Am I missing something? Or is this Apple Mail's fault (this is the email client I am using for receiving emails)?
I am grateful for any idea (and thanks so much to Jeffrey Stedfast for providing such a great toolset!!).
Ingmar
Try something a bit more like this:
var builder = new BodyBuilder ();
var pathImage = Path.Combine (Misc.GetPathOfExecutingAssembly (), "Image.png");
var image = builder.LinkedResources.Add (pathLogoFile);
image.ContentId = MimeUtils.GenerateMessageId ();
builder.HtmlBody = string.Format (@"<p>Hey!</p><img src=""cid:{0}"">", image.ContentId);
message.Body = builder.ToMessageBody ();
If this works for you, I'll update the documentation.
The problem might be that Apple's multipart/related implementation does not resolve the Image.png reference using the Content-Location header on the image mime part (possibly because it is a relative URL).
The cid: URL-type should work, though, but it's a bit more awkward to construct since you need to know the Content-Id values for each image attachment.
Just for reference, this can be found under http://www.mimekit.net/docs/html/Creating-Messages.htm now. The link in the original answer is broken.