(Visual Basic 6.0) Imap.GetMailSize vs Email.Size

Shows how to get the total size of an email, as well as the sizes of the attachments. This can be done when either full-emails or headers-only are downloaded.

Note: This example requires Chilkat v11.0.0 or greater.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

Dim success As Long
success = 0

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

Dim imap As New ChilkatImap

' Connect to an IMAP server.
' Use TLS
imap.Ssl = 1
imap.Port = 993
success = imap.Connect("imap.someMailServer.com")
If (success = 0) Then
    Debug.Print imap.LastErrorText
    Exit Sub
End If

' Login
success = imap.Login("****","****")
If (success = 0) Then
    Debug.Print imap.LastErrorText
    Exit Sub
End If

' Select an IMAP mailbox
success = imap.SelectMailbox("Inbox")
If (success = 0) Then
    Debug.Print imap.LastErrorText
    Exit Sub
End If

' Get the message IDs of all the emails in the mailbox
' We can choose to fetch UIDs or sequence numbers.
Dim fetchUids As Long
fetchUids = 1
Dim messageSet As New MessageSet
success = imap.QueryMbx("ALL",fetchUids,messageSet)
If (success = 0) Then
    Debug.Print imap.LastErrorText
    Exit Sub
End If

' When downloading headers, each email object contains
' (obviously) the headers, but the body will be missing.
' Attachments will not be included.  However, it is
' possible to get information about the attachments
' as well as the complete size of the email.
Dim bundle As New ChilkatEmailBundle
Dim headersOnly As Long
headersOnly = 1
success = imap.FetchMsgSet(headersOnly,messageSet,bundle)
If (success = 0) Then
    Debug.Print imap.LastErrorText
    Exit Sub
End If

' Loop over the email objects and display information about each:
Dim email As New ChilkatEmail
Dim i As Long
i = 0
Dim j As Long
j = 0
Dim numEmails As Long
numEmails = bundle.MessageCount
Do While i < numEmails
    success = bundle.EmailAt(i,email)

    ' Display the From and Subject
    Debug.Print email.From
    Debug.Print email.Subject

    ' Display the recipients:
    j = 0
    Do While j < email.NumTo
        Debug.Print "TO: " & email.GetToName(j) & ", " & email.GetToAddr(j)
        j = j + 1
    Loop
    j = 0
    Do While j < email.NumCC
        Debug.Print "CC: " & email.GetCcName(j) & ", " & email.GetCcAddr(j)
        j = j + 1
    Loop

    ' Show the total size of the email, including body and attachments:
    Debug.Print email.Size

    ' When a full email is downloaded, we would use the
    ' email.NumAttachments property in conjunction with the
    ' email.GetMailAttach* methods.
    ' However, when an email object contains only the header,
    ' we need to access the attachment info differently:
    Dim numAttach As Long
    numAttach = imap.GetMailNumAttach(email)
    j = 0
    Do While j < numAttach
        Debug.Print imap.GetMailAttachFilename(email,j)
        Dim attachSize As Long
        attachSize = imap.GetMailAttachSize(email,j)
        Debug.Print "    size = " & attachSize & " bytes"
        j = j + 1
    Loop

    Debug.Print "--"

    i = i + 1
Loop

' Disconnect from the IMAP server.
success = imap.Disconnect()