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Unable to bind the inline image into body content using FluentMail.SMTP

See original GitHub issue

Hi,

I’m trying to bind an embedded image to the mail body content.

Below is my code:

private void SendEmailWithInlineImages_FluentEmail()
        {
            try
            {
                //var assembly = Assembly.GetExecutingAssembly();
                //var stream = assembly.GetManifestResourceStream(@"C:\Users\a.b\Downloads\FluentLogo.png");
                //stream.Flush();

                //stream.Seek(0, SeekOrigin.Begin);

                //Setup Default sender befault sending the email.
                System.Net.Mail.SmtpClient smtpClient = new System.Net.Mail.SmtpClient
                {
                    Host = "smtp.office365.com",
                    Port = 587,
                    EnableSsl = true,
                    Credentials = new System.Net.NetworkCredential("a.b@gmail.com", "12345")
                };
                Email.DefaultSender = new SmtpSender(smtpClient);

                Email.DefaultRenderer = new RazorRenderer();
                string imagePath = @"C:\Users\pratik.soni\Downloads\FluentLogo.png";

                var attachment = new Core.Models.Attachment()
                {
                    IsInline = true,
                    Data = new FileStream(imagePath, FileMode.Open, FileAccess.Read),
                    ContentType = "image/png",
                    Filename = "FluentLogo.png"
                };

                var email = Email
                    .From("a.b@yahoo.com")
                    .To("a.b@gmai.com")
                    .Subject("Test with embadded image")
                    .Body("<html>Inline image here: <img src=\"cid:FluentLogo.png\">" +
                    "<p>You should see an image without an attachment, or without a download prompt, dependig on the email client.</p></html>", true)
                    .Attach(attachment);

                email.Send();
            }
            catch (Exception ex)
            {
                throw;
            }
        }

But with this code, it is getting adding this image as an attachment rather than setting it up as an inline embedded image.

Issue Analytics

State:
Created 5 years ago
Reactions:2
Comments:8

Top GitHub Comments

4reactions

WadeTheFadecommented, Aug 27, 2018

I am able to send inline an image using CID and SMTP. I did it in the following manner (found how to do it from the Unit Tests in the PR for Mailgun):

Not sure this is the best way, but it does it. Outlook does show an attachment icon, but it doesn’t force you to download images before showing it.

var stream = ass.GetManifestResourceStream("NAMESPACE.TO.EMBEDDED.RESOURCE.logo.png");
            stream.Flush();
            stream.Seek(0, SeekOrigin.Begin);
            var attachment = new Attachment()
            {
                IsInline = true,
                Data = stream,
                ContentType = "image/png",
                Filename = "logo.png"
            };
_emailFactory.Create()
                    .To(u.EmailAddress)
                    .Subject(subject)
                    .Body(htmlBody, true)
                    .Attach(attachment)
                    .PlaintextAlternativeBody(textBody));

and in my Razor file I just have: <img src="cid:logo.png">

My only issue is I couldn’t really find any documentation on any of this.

0reactions

VictorioBerracommented, Mar 4, 2022

@zimmer62 Thanks for posting this. You are right, multipart/related in the eml shows up in Papercut SMTP now.

Is this an issue with Papercut, or FluentEmail? Why and when should we use multipart/related over multipart/mixed?

Thanks!

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