How to send HTML message via Mimekit/Mailkit

Question

BodyBuilder bodyBuilder = new BodyBuilder();
messageContent.Body = "<b>This is a test mail</b>";
bodyBuilder.HtmlBody = messageContent.Body;

I tried to embed my body to a bodybuilder but when I received the email, it returned an empty body. I have an exception that would throw an argument if the body is empty..

score 97 · Accepted Answer · edited Aug 03 '21 at 14:27

97

Using a BodyBuilder like you are doing is probably the easiest way.

var bodyBuilder = new BodyBuilder();
bodyBuilder.HtmlBody = "<b>This is some html text</b>";
bodyBuilder.TextBody = "This is some plain text";

message.Body = bodyBuilder.ToMessageBody();

client.Send(message);

edited Aug 03 '21 at 14:27

Alex

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answered Dec 15 '16 at 14:35

jstedfast

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If you only include `HtmlBody` and not `TextBody`, is there a risk that it could be identified as spam for only including one and not both? – LatentDenis Aug 03 '17 at 18:34
That probably depends on the recipients mail software – jstedfast Aug 03 '17 at 19:00
2

More real world samples ? – Kiquenet Feb 06 '18 at 11:34
Also, if the mail still shows in plain text, it could be due to the recipients mail software detects it as spam and converts it in plain text. E.g. Outlook does it. – Himanshu May 13 '22 at 11:05
@jstedfast How can we add multiple images to the body, not as an attachment – Ali Jul 31 '22 at 02:22
@jstedfast it shows plain text in 2 differnt recipients, i am following same – Abid Hussain Nov 03 '22 at 08:39

Stephen C · Answer 2 · 2017-04-20T15:35:16.243

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MimeKit Documentation - Creating Messages

var message = new MimeMessage();    
message.Body = new TextPart ("html") { Text = "<b>Test Message</b>" };

"A TextPart is a leaf-node MIME part with a text media-type. The first argument to the TextPart constructor specifies the media-subtype: plain, html, enriched, rtf, and xml."

edited Apr 20 '17 at 15:35

answered Feb 13 '17 at 16:14

Stephen C

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I was having a problem getting other examples to work. This one went perfectly. Thank you! – RiverNet Jun 10 '21 at 17:24

score 25 · Answer 3 · answered Feb 14 '18 at 09:37

25

One other option here if you want to be strict;

msg.Body = new TextPart(MimeKit.Text.TextFormat.Html) { Text = "<b>html content</b>" };

answered Feb 14 '18 at 09:37

Josh

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score 3 · Answer 4 · answered Aug 08 '18 at 03:29

3

var bodyBuilder = new BodyBuilder();
bodyBuilder.HtmlBody = body;
bodyBuilder.TextBody = "-";

message.Body = bodyBuilder.ToMessageBody();

In some mail ISP, you should always set bodyBuilder.TextBody by value.

answered Aug 08 '18 at 03:29

Lei Chi

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How to send HTML message via Mimekit/Mailkit

4 Answers4

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