B4X
Add Image to HTML Email

Demonstrates how to add an image to an HTML email.
Chilkat B4X Downloads

B4X
Dim success As Boolean = False

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

Dim email As ChilkatEmail
email.Initialize

email.From = "Matt <matt@example.com>"
email.AddTo("Joe", "joe@example.com")
email.Subject = "This is a test"

'  Add an HTML body with an image tag.
Dim html As String = "<html><body><p>Test with image:</p><p><img src=" & Chr(34) & "/wildlife/starfish.jpg" & Chr(34) & " /></p></body></html>"
email.SetHtmlBody(html)

'  Add the image data from a file.  The pathInHtml must match the value of the img tag's src attribute.
Dim pathInHtml As String = "/wildlife/starfish.jpg"
'  The actual path of the JPG file in the local filesystem:
Dim pathOnDisk As String = "qa_data/jpg/starfish20.jpg"

success = email.AddRelatedFile2(pathOnDisk, pathInHtml)
If success = False Then
    Log(email.LastErrorText)
    Return
End If


'  The email is now properly constructed with an image that will be visible in the HTML.
'  In this example, we'll save it to a .eml file and verify by loading the .eml in an email client such as Mozilla Thunderbird.

success = email.SaveEml("qa_output/starfish.eml")

'  Also, we can examine the MIME to understand how the image data in the MIME is associated with the img tag in the HTML.
'  It is the Content-Location header value that must match the value of the img tag's src attribute.

Log(email.GetMime)

'  Here's the MIME:

'  MIME-Version: 1.0
'  Date: Thu, 26 May 2022 11:09:12 -0500
'  Message-ID: <B1D499F74F533E287BFE04BBD79AAF1D973B61E3@SLICE>
'  Content-Type: multipart/related; boundary="------------000205040704010904010706"
'  X-Priority: 3 (Normal)
'  From: Matt <matt@example.com>
'  To: Joe <joe@example.com>
'  Subject: This is a test
'  
'  --------------000205040704010904010706
'  Content-Type: text/html; charset=us-ascii
'  Content-Transfer-Encoding: 7bit
'  
'  <html><body><p>Test with image:</p><p><img src="/wildlife/starfish.jpg" /></p></body></html>
'  --------------000205040704010904010706
'  Content-Type: image/jpeg; name="/wildlife/starfish.jpg"
'  Content-Transfer-Encoding: base64
'  Content-Disposition: inline; filename="/wildlife/starfish.jpg"
'  Content-Location: /wildlife/starfish.jpg
'  
'  /9j/4AAQSkZJRgABAQEASABIAAD//gAmRmlsZSB3cml0dGVuIGJ5IEFkb2JlIFBob3Rvc2hvcD8g
'  NC4w/9sAQwAQCwwODAoQDg0OEhEQExgoGhgWFhgxIyUdKDozPTw5Mzg3QEhcTkBEV0U3OFBtUVdf
'  YmdoZz5NcXlwZHhcZWdj/9sAQwEREhIYFRgvGhovY0I4QmNjY2NjY2NjY2NjY2NjY2NjY2NjY2Nj
'  Y2NjY2NjY2NjY2NjY2NjY2NjY2NjY2NjY2Nj/8IAEQgAFAAUAwERAAIRAQMRAf/EABcAAAMBAAAA
'  AAAAAAAAAAAAAAIDBAX/xAAYAQADAQEAAAAAAAAAAAAAAAABAgMEAP/aAAwDAQACEAMQAAAB2kZY
'  NNEijWKddfTmLgALWH//xAAbEAACAgMBAAAAAAAAAAAAAAABAgMRAAQSE//aAAgBAQABBQL0XqN+
'  pM2aqJGMiqFFCyg7z//EABwRAAICAgMAAAAAAAAAAAAAAAERAAIQIQMSUf/aAAgBAwEBPwHqU5aq
'  Axx+y1tMQl4elj//xAAcEQEAAQUBAQAAAAAAAAAAAAABEQACEBIhA1H/2gAIAQIBAT8B3Bhqy7Zc
'  enyiwmGgDhiOzj//xAAdEAABAwUBAAAAAAAAAAAAAAABAAIREBIhIkFR/9oACAEBAAY/ArZyn+Cg
'  xtxWuJaoCnqDuin/xAAcEAABBAMBAAAAAAAAAAAAAAABABEhYRAxQVH/2gAIAQEAAT8hkEwPUUR9
'  DYfE4nxtRpIkBTsayuALIiuY/9oADAMBAAIAAwAAABDWPTsf/8QAGhEAAwADAQAAAAAAAAAAAAAA
'  AAEREDFBIf/aAAgBAwEBPxC0DVPcWm+Ce4OesrkE6bjH/8QAGBEBAQEBAQAAAAAAAAAAAAAAAREA
'  QRD/2gAIAQIBAT8QahMiOc8YgSrnTY3ELclHXn//xAAcEAEBAAIDAQEAAAAAAAAAAAABEQAhMUFx
'  EFH/2gAIAQEAAT8Qn3igmSZSj+c4N4zapMy9IjFV98wncN2iuLFsCEbDGxQkI6RO/n//2Q==
'  
'  --------------000205040704010904010706--