Fetch a Range of POP3 Messages

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Demonstrates the Chilkat MailMan.FetchRange method, which retrieves a range of messages from the POP3 mailbox and appends them to an EmailBundle. The arguments are keepOnServer, headersOnly, numBodyLines, a zero-based inclusive startIndex and endIndex, and the EmailBundle. This example fetches the first five messages.

Dim success As Boolean = False

'  Demonstrates the MailMan.FetchRange method, which retrieves a range of messages from the
'  POP3 mailbox and appends them to an EmailBundle.  The arguments are keepOnServer,
'  headersOnly, numBodyLines, startIndex, endIndex, and the EmailBundle.  The indexes are
'  zero-based and inclusive.

Dim mailman As ChilkatMailMan
mailman.Initialize("mailman")

'  Configure the POP3 server connection.
mailman.MailHost = "pop.example.com"
mailman.MailPort = 995
mailman.PopSsl = True
mailman.PopUsername = "user@example.com"
mailman.PopPassword = "myPassword"

'  Fetch the first 5 messages (indexes 0 through 4), full bodies, leaving them on the server.
'  keepOnServer=True, headersOnly=False (fetch the entire message).
'  Note: numBodyLines only applies when headersOnly is True (it sets how many lines of the
'  body to include along with the headers).  When headersOnly is False, the entire message
'  is fetched and numBodyLines is ignored.
Dim bundle As ChilkatEmailBundle
bundle.Initialize

success = mailman.FetchRange(True, False, 0, 0, 4, bundle)
If success = False Then
    Log(mailman.LastErrorText)
    Return
End If


Dim n As Int = bundle.MessageCount
Log("Fetched " & n & " messages.")

Dim email As ChilkatEmail
email.Initialize
Dim i As Int
For i = 0 To n - 1
    success = bundle.EmailAt(i, email)
    Log(email.Subject)
Next

'  Note: Explicitly connecting/authenticating is optional.  Chilkat MailMan automatically
'  connects and authenticates -- using the property settings above -- whenever a server
'  operation requires it.  Calling the explicit connect/authenticate methods can still be
'  helpful to determine whether a failure occurs while connecting or while authenticating.