(DataFlex) Fetch Oldest/Newest IMAP Email

Emails may be downloaded by sequence number. Assuming the selected mailbox is not empty, the oldest email is at sequence number 1, and the newest email is at sequence number N. The FetchSingle method may be used to download by sequence number.

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

Use ChilkatAx-9.5.0-win32.pkg

Procedure Test
    Handle hoImap
    Boolean iSuccess
    Integer n
    Boolean iIsUid
    Variant vOldestEmail
    Handle hoOldestEmail
    Variant vNewestEmail
    Handle hoNewestEmail
    String sTemp1
    Boolean bTemp1

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

    Get Create (RefClass(cComChilkatImap)) To hoImap
    If (Not(IsComObjectCreated(hoImap))) Begin
        Send CreateComObject of hoImap
    End

    // Connect to an IMAP server.
    // Use TLS
    Set ComSsl Of hoImap To True
    Set ComPort Of hoImap To 993
    Get ComConnect Of hoImap "mail.testemail.net" To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoImap To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // Login
    Get ComLogin Of hoImap "***" "***" To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoImap To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // Select an IMAP mailbox
    Get ComSelectMailbox Of hoImap "Inbox" To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoImap To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // After selecting a mailbox, the NumMessages property
    // contains the number of emails in the selected mailbox.

    Get ComNumMessages Of hoImap To n

    If (n > 0) Begin

        // The oldest email is always at sequence number 1.
        Move False To iIsUid

        Get ComFetchSingle Of hoImap 1 iIsUid To vOldestEmail
        If (IsComObject(vOldestEmail)) Begin
            Get Create (RefClass(cComChilkatEmail)) To hoOldestEmail
            Set pvComObject Of hoOldestEmail To vOldestEmail
        End
        Get ComLastMethodSuccess Of hoImap To bTemp1
        If (bTemp1 = True) Begin

            // Display the From and Subject
            Get ComFromAddress Of hoOldestEmail To sTemp1
            Showln sTemp1
            Get ComSubject Of hoOldestEmail To sTemp1
            Showln sTemp1

            Showln "--"
            Send Destroy of hoOldestEmail
        End

        // The newest email is at sequence number N:

        Get ComFetchSingle Of hoImap n iIsUid To vNewestEmail
        If (IsComObject(vNewestEmail)) Begin
            Get Create (RefClass(cComChilkatEmail)) To hoNewestEmail
            Set pvComObject Of hoNewestEmail To vNewestEmail
        End
        Get ComLastMethodSuccess Of hoImap To bTemp1
        If (bTemp1 = True) Begin

            // Display the From and Subject
            Get ComFromAddress Of hoNewestEmail To sTemp1
            Showln sTemp1
            Get ComSubject Of hoNewestEmail To sTemp1
            Showln sTemp1

            Send Destroy of hoNewestEmail
        End

    End

    // Disconnect from the IMAP server.
    Get ComDisconnect Of hoImap To iSuccess


End_Procedure