B4X

Embed a Message as message/rfc822

Demonstrates the Chilkat Mime.NewMessageRfc822 method, which clears the object and initializes it as a message/rfc822 entity whose body is a serialized copy of another Mime. The only argument is the message to embed.

Background: message/rfc822 wraps a whole email as the body of another — the mechanism behind forwarding a message "as attachment" or bundling one message inside another. The inner message is copied at the time of the call, so later edits to the source do not change the embedded copy. The result is a self-contained part a mail client will present as a nested message.

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Dim success As Boolean = False

'  Demonstrates the Mime.NewMessageRfc822 method, which clears the current object and initializes
'  it as a message/rfc822 entity whose body is a serialized copy of another Mime.  The only
'  argument is the Mime to embed.

'  Build the inner message to embed.
Dim innerMsg As ChilkatMime
innerMsg.Initialize
success = innerMsg.SetHeaderField("Subject", "Forwarded message")
If success = False Then
    Log(innerMsg.LastErrorText)
    Return
End If

success = innerMsg.SetBodyFromPlainText("This is the original message being forwarded.")
If success = False Then
    Log(innerMsg.LastErrorText)
    Return
End If


'  Wrap it as message/rfc822 (an embedded/forwarded email).
Dim mime As ChilkatMime
mime.Initialize
success = mime.NewMessageRfc822(innerMsg)
If success = False Then
    Log(mime.LastErrorText)
    Return
End If


Log("Content-Type: " & mime.ContentType)