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
success = 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 New Chilkat.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=cktrue, headersOnly=ckfalse (fetch the entire message).
//  Note: numBodyLines only applies when headersOnly is 1 (it sets how many lines of the
//  body to include along with the headers).  When headersOnly is 0, the entire message
//  is fetched and numBodyLines is ignored.
Dim bundle As New Chilkat.EmailBundle

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

Dim n As Int32
n = bundle.MessageCount
System.DebugLog("Fetched " + Str(n) + " messages.")

Dim email As New Chilkat.Email
Dim i As Int32
For i = 0 To n - 1
    success = bundle.EmailAt(i,email)
    System.DebugLog(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.