(DataFlex) Send Email to Distribution List

Sends the same email to a list of 1000 email addresses in 50 sends where each email has 20 recipients.

Note: Chilkat is not intended nor designed for mass emailing. A solution such as this might be used for a corporate emailing to employees, or an emailing to newsletter subscribers.

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

Use ChilkatAx-9.5.0-win32.pkg

Procedure Test
    Handle hoMailman
    Boolean iSuccess
    Variant vEmail
    Handle hoEmail
    Variant vBdMime
    Handle hoBdMime
    Handle hoDistList
    Handle hoSbRecipients
    Integer i
    Integer iSzDistList
    Integer j
    String sTemp1

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

    Get Create (RefClass(cComChilkatMailMan)) To hoMailman
    If (Not(IsComObjectCreated(hoMailman))) Begin
        Send CreateComObject of hoMailman
    End

    Set ComSmtpHost Of hoMailman To "smtp.mymailserver.com"
    Set ComSmtpPort Of hoMailman To 465
    Set ComSmtpSsl Of hoMailman To True
    Set ComSmtpUsername Of hoMailman To "myUsername"
    Set ComSmtpPassword Of hoMailman To "myPassword"

    // Create a new email object
    Get Create (RefClass(cComChilkatEmail)) To hoEmail
    If (Not(IsComObjectCreated(hoEmail))) Begin
        Send CreateComObject of hoEmail
    End
    Set ComSubject Of hoEmail To "This is a test"
    Set ComBody Of hoEmail To "This is a test"
    Set ComFrom Of hoEmail To "Senders Name <sender@example.com>"
    Get ComAddTo Of hoEmail "Subscribers" "subscribers@example.com" To iSuccess

    Get Create (RefClass(cComChilkatBinData)) To hoBdMime
    If (Not(IsComObjectCreated(hoBdMime))) Begin
        Send CreateComObject of hoBdMime
    End
    Get pvComObject of hoEmail to vEmail
    Get pvComObject of hoBdMime to vBdMime
    Get ComRenderToMimeBd Of hoMailman vEmail vBdMime To iSuccess

    // Load a file containing one email address per line.
    Get Create (RefClass(cComChilkatStringTable)) To hoDistList
    If (Not(IsComObjectCreated(hoDistList))) Begin
        Send CreateComObject of hoDistList
    End
    Get ComAppendFromFile Of hoDistList 1000 "utf-8" "qa_data/distList.txt" To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoDistList To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Get Create (RefClass(cComChilkatStringBuilder)) To hoSbRecipients
    If (Not(IsComObjectCreated(hoSbRecipients))) Begin
        Send CreateComObject of hoSbRecipients
    End

    Move 0 To i
    Get ComCount Of hoDistList To iSzDistList
    Move 0 To j
    While (i < iSzDistList)

        // Build a list of comma-separated recipients.
        If (j > 0) Begin
            Get ComAppend Of hoSbRecipients "," To iSuccess
        End

        Get ComStringAt Of hoDistList i To sTemp1
        Get ComAppend Of hoSbRecipients sTemp1 To iSuccess

        Move (i + 1) To i
        Move (j + 1) To j

        // If we have 20 recipients, or we have the final recipient in the final chunk, then send.
        If ((j = 20) Or (i = iSzDistList)) Begin
            Get ComGetAsString Of hoSbRecipients To sTemp1
            Get pvComObject of hoBdMime to vBdMime
            Get ComSendMimeBd Of hoMailman "sender@example.com" sTemp1 vBdMime To iSuccess
            If (iSuccess <> True) Begin
                Get ComLastErrorText Of hoMailman To sTemp1
                Showln sTemp1
                Procedure_Return
            End

            Move 0 To j
            Send ComClear To hoSbRecipients
        End

    Loop

    Get ComCloseSmtpConnection Of hoMailman To iSuccess
    If (iSuccess <> True) Begin
        Showln "Connection to SMTP server not closed cleanly."
    End

    Showln "Email sent to distirbution list."


End_Procedure