VB.NET

Get a Digest Message as an Email Object

Demonstrates the Chilkat Email.GetDigestEmail method, which copies the Nth digest email contained within a multipart/digest into another Email object. The first digest is at index 0; the NumDigests property gives the count. This example loads a digest email and lists each bundled message's subject.

Background: A multipart/digest packs many separate emails into one carrier message — historically used by mailing lists to send a single daily bundle of that day's posts. GetDigestEmail unpacks each member into a full Email object so it can be read or processed individually. This differs from GetAttachedEmail, which extracts messages attached to an ordinary email rather than the members of a digest.

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VB.NET

Dim success As Boolean = False

'  Demonstrates the GetDigestEmail method, which copies the Nth digest email contained
'  within a multipart/digest into another Email object.  The first digest is at index 0;
'  use the NumDigests property for the count.

Dim email As New Chilkat.Email

success = email.LoadEml("qa_data/eml/digest.eml")
If (success = False) Then
    Debug.WriteLine(email.LastErrorText)
    Exit Sub
End If


Dim n As Integer = email.NumDigests
Debug.WriteLine("NumDigests = " & n)

'  Retrieve each bundled message as its own Email object.
Dim digestEmail As New Chilkat.Email
Dim i As Integer
For i = 0 To n - 1
    success = email.GetDigestEmail(i,digestEmail)
    Debug.WriteLine("Digest " & i & " subject: " & digestEmail.Subject)
Next

'  Note: The path "qa_data/..." is a relative local filesystem path,
'  relative to the current working directory of the running application.