(Classic ASP) How to Download Messages in MessageSet One at a Time

If a message set contains a huge number of emails, it's NOT a good idea to try to download all at once into an email bundle using a method such as FetchBundle. It's better to iterate over the messages in the set to download one by one.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

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

' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.Imap")
set imap = Server.CreateObject("Chilkat.Imap")

' Connect using TLS.
imap.Ssl = 1
imap.Port = 993
success = imap.Connect("imap.example.com")
If (success <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( imap.LastErrorText) & "</pre>"
    Response.End
End If

' Authenticate
success = imap.Login("email_account_login","email_account_password")
If (success <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( imap.LastErrorText) & "</pre>"
    Response.End
End If

' Select an IMAP mailbox
success = imap.SelectMailbox("Inbox")
If (success <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( imap.LastErrorText) & "</pre>"
    Response.End
End If

' Search for messages and return a set of matching messages.
' (This example will simply search for ALL messages.)
fetchUids = 1
' messageSet is a Chilkat.MessageSet
Set messageSet = imap.Search("ALL",fetchUids)
If (imap.LastMethodSuccess <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( imap.LastErrorText) & "</pre>"
    Response.End
End If

Response.Write "<pre>" & Server.HTMLEncode( "Number of messages = " & messageSet.Count) & "</pre>"

i = 0
Do While i < messageSet.Count
    ' email is a Chilkat.Email
    Set email = imap.FetchSingle(messageSet.GetId(i),fetchUids)
    If (imap.LastMethodSuccess <> 1) Then
        Response.Write "<pre>" & Server.HTMLEncode( imap.LastErrorText) & "</pre>"

        Response.End
    End If

    Response.Write "<pre>" & Server.HTMLEncode( email.From & "; " & email.Subject) & "</pre>"

    i = i + 1
Loop

Response.Write "<pre>" & Server.HTMLEncode( "OK") & "</pre>"

%>
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