.NET email component<\/a> to your project.<\/p>\nFirst we’ll learn some basics of HTML syntax used in emails. Especially how to reference image attached to the message from the HTML content. We use cid protocol to do that:<\/p>\n
\r\n<img src = 'cid:image1' \/>\r\n<\/pre>\nWhat comes after “cid:” is the Content-ID of the referenced visual object. This object must be attached to the email.<\/p>\n
As always, when we need to create email message, we use MailBuilder<\/em> class. We need to set Html<\/em> property with the HTML data. It is always good to send emails both in HTML and plain text formats. Good thing is, that Mail.dll automatically extracts plain text data from HTML<\/strong> content when Html<\/em> property is set.<\/p>\n\r\nMailBuilder builder = new MailBuilder();\r\nbuilder.Html = \/\/ Set HTML body\r\n "This is <strong>HTML<\/strong> message, " +\r\n "with embedded image:<br \/>" +\r\n "<img src = 'cid:image1' \/>.";\r\n<\/pre>\nNext thing we need to do is to attach the image. We’ll use AddVisual <\/em> method for that – it adds visual element to the email MIME tree. AddVisual <\/em> has few overloads that allow to add MIME objects from memory stream, byte array or from disk.<\/p>\nRemember to set ContentId <\/em> property for added visual objects (E.g. image.ContentId = “image1”).<\/p>\n\r\nMimeData image = builder.AddVisual(@"c:\\image.jpg");\r\nimage.ContentId = "image1";\r\n<\/pre>\nFinal step is to connect to SMTP server and send the message. Use Connect(string host)<\/em> method to establish connection – it uses standard SMTP server port: 587. You can use Connect(string host, int port)<\/em> overload, if you need to specify different port (for example 25). If your server requires SSL use ConnectSSL <\/em>method (Here you can find more info on using SMTP with SSL).<\/p>\nHere’s the entire sample:<\/p>\n
\r\n\/\/ C# version\r\n\r\nusing System;\r\nusing Limilabs.Mail;\r\nusing Limilabs.Mail.MIME;\r\nusing Limilabs.Mail.Headers;\r\nusing Limilabs.Client.SMTP;\r\n\r\nclass Program\r\n{\r\n static void Main(string[] args)\r\n {\r\n \/\/ Use builder class to create new email message\r\n MailBuilder builder = new MailBuilder();\r\n builder.From.Add(new MailBox("alice@mail.com", "Alice"));\r\n builder.To.Add(new MailBox("bob@mail.com", "Bob"));\r\n builder.Subject = "This is HTML test";\r\n\r\n builder.Html = \/\/ Set HTML body\r\n "This is <strong>HTML<\/strong> message, " +\r\n "with embeddedimage:<br \/>" +\r\n "<img src = 'cid:image1' \/>.";\r\n\r\n \/\/ Read attachment from disk...and add it to Visuals collection\r\n MimeData image = builder.AddVisual(@"c:\\image.jpg");\r\n image.ContentId = "image1";\r\n\r\n IMail email = builder.Create();\r\n\r\n \/\/ Send the message\r\n using (Smtp smtp = new Smtp())\r\n {\r\n smtp.Connect("server.example.com"); \/\/ or ConnectSSL for SSL\r\n smtp.UseBestLogin("user", "password"); \/\/ remove if not needed\r\n\r\n smtp.SendMessage(email);\r\n\r\n smtp.Close();\r\n }\r\n }\r\n};\r\n<\/pre>\n\r\n' VB.NET version\r\n\r\nImports Limilabs.Client.SMTP\r\nImports Limilabs.Mail\r\nImports Limilabs.Mail.MIME\r\nImports Limilabs.Mail.Headers\r\n\r\nPublic Module Module1\r\n Public Sub Main(ByVal args As String())\r\n\r\n ' Use builder class to create new email message\r\n Dim builder As New MailBuilder()\r\n builder.From.Add(New MailBox("alice@mail.com", "Alice"))\r\n builder.[To].Add(New MailBox("bob@mail.com", "Bob"))\r\n builder.Subject = "This is HTML test"\r\n\r\n ' Set HTML body\r\n builder.Html = "This is <strong>HTML<\/strong> message, " _\r\n + "with embeddedimage:<br \/>" _\r\n + "<img src = 'cid:image1' \/>."\r\n\r\n ' Read attachment from disk...and add it to Visuals collection\r\n Dim image As MimeData = builder.AddVisual("c:\\image.jpg")\r\n image.ContentId = "image1"\r\n\r\n Dim email As IMail = builder.Create()\r\n\r\n ' Send the message\r\n Using smtp As New Smtp()\r\n smtp.Connect("server.example.com") ' or ConnectSSL for SSL\r\n smtp.UseBestLogin("user", "password") ' remove if not needed\r\n\r\n smtp.SendMessage(email)\r\n\r\n smtp.Close()\r\n End Using\r\n\r\n End Sub\r\nEnd Module\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"In this article we’ll show how to create and send HTML email message with embedded image. As a prerequisite you need to add reference to Mail.dll .NET email component to your project. First we’ll learn some basics of HTML syntax used in emails. Especially how to reference image attached to the message from the HTML […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[15,33,50,57],"class_list":["post-1284","post","type-post","status-publish","format-standard","hentry","category-mail-dll","tag-c","tag-email-component","tag-smtp","tag-vb-net"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.limilabs.com\/blog\/wp-json\/wp\/v2\/posts\/1284"}],"collection":[{"href":"https:\/\/www.limilabs.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.limilabs.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.limilabs.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.limilabs.com\/blog\/wp-json\/wp\/v2\/comments?post=1284"}],"version-history":[{"count":7,"href":"https:\/\/www.limilabs.com\/blog\/wp-json\/wp\/v2\/posts\/1284\/revisions"}],"predecessor-version":[{"id":5360,"href":"https:\/\/www.limilabs.com\/blog\/wp-json\/wp\/v2\/posts\/1284\/revisions\/5360"}],"wp:attachment":[{"href":"https:\/\/www.limilabs.com\/blog\/wp-json\/wp\/v2\/media?parent=1284"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.limilabs.com\/blog\/wp-json\/wp\/v2\/categories?post=1284"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.limilabs.com\/blog\/wp-json\/wp\/v2\/tags?post=1284"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}