(VB.NET UWP/WinRT) Send HTML Email with Embedded Image Loaded from Memory

Demonstrates how to compose an HTML email with an embedded image where the image data is loaded directly from memory.

Chilkat Universal Windows Platform (UWP) / WinRT Downloads

Chilkat for the Universal Windows Platform (UWP)

' This example requires the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

' First load image data into memory.
' This example loads image data from a file.
' However, your application could get the image data from any other source, such as
' from a database.
Dim fac As New Chilkat.FileAccess
Dim imageBytes() As Byte
imageBytes = fac.ReadEntireFile("qa_data/jpg/starfish.jpg")


' The mailman object is used for sending and receiving email.
Dim mailman As New Chilkat.MailMan

' Use your SMTP server hostname.  This example uses office365, but it could be any SMTP server..
mailman.SmtpHost = "outlook.office365.com"
mailman.SmtpPort = 587
mailman.StartTLS = True

' Set the SMTP login/password
mailman.SmtpUsername = "OFFICE365-SMTP-LOGIN"
mailman.SmtpPassword = "OFFICE365-SMTP-PASSWORD"

' Create a new email object
Dim email As New Chilkat.Email
email.Subject = "HTML Email with Image Loaded from In-Memory Bytes"
email.From = "Chilkat Support <my-office365-user@mydomain.com>"
email.AddTo("Chilkat Support","support@chilkatsoft.com")


Dim contentIdStarfish As String = email.AddRelatedData("starfish.jpg",imageBytes)
If (email.LastMethodSuccess <> True) Then
    Debug.WriteLine(email.LastErrorText)
    Exit Sub
End If


' The src attribute for the image tag is set to the contentIdStarfish:
Dim sbHtml As New Chilkat.StringBuilder
sbHtml.Append("<html><body><p>This is an HTML email with an embedded image.</p>")
sbHtml.Append("<p><img src=""cid:CONTENT_ID_STARFISH"" /></p></body></html>")
Dim numReplacements As Integer = sbHtml.Replace("CONTENT_ID_STARFISH",contentIdStarfish)

email.SetHtmlBody(sbHtml.GetAsString())

Dim success As Boolean = Await mailman.SendEmailAsync(email)
If (success <> True) Then
    Debug.WriteLine(mailman.LastErrorText)
Else
    Debug.WriteLine("Mail Sent!")
End If