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ivan  
#1 Posted : Sunday, April 3, 2011 6:38:59 PM(UTC)
ivan

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VB6, VBA Example

Read Receipt

Some e-mail applications, such as Microsoft Office Outlook, employ a read-receipt tracking mechanism. A sender selects the receipt request option prior to sending the message. Upon opening the email, each recipient has the option of notifying the sender that the message was opened and read.

However, there is no guarantee that you will get a read-receipt. Some possible reason are that very few e-mail applications or services support read receipts, or simply because users disable the functionality. Those do support read-receipt aren't necessarily compatible with or capable of recognizing requests from a different e-mail service or application

Delivery Receipt and Failure Report (NDS)

It is also called a DSN (delivery service notification), which is a request to the recipient’s email server to send you a notification about the delivery of an email you've just sent. The notification takes the form of an email, and will tell you if your delivery succeeded (Delivery Receipt), failed, got delayed (Failure Report (NDS)).

' The following example codes demonstrate requesting read receipt and delivery receipt
' To get full sample projects, please download and install EASendMail on your machine.
' To run it correctly, please change SMTP server, user, password, sender, recipient value to yours

Code:

Const Notification_None = 0 
Const Notification_OnSuccess = 2 
Const Notification_OnFailure = 4 
Const Notification_Delay = 8 
Const Notification_Never = 16 

Private Sub btnSendMail_Click() 

    Dim oSmtp As New EASendMailObjLib.Mail 
    oSmtp.LicenseCode = "TryIt" 

    ' Set your sender email address
    oSmtp.FromAddr = "test@emailarchitect.net" 

    ' Add recipient email address
    oSmtp.AddRecipientEx "support@emailarchitect.net", 0 

    ' Set email subject
    oSmtp.Subject = "simple email from VB 6.0 project" 

    ' Set email body
    oSmtp.BodyText = "this is a test email sent from VB 6.0 project, do not reply" 

    ' Your SMTP server address
    oSmtp.ServerAddr = "smtp.emailarchitect.net" 

    ' User and password for ESMTP authentication, if your server doesn't require
    ' User authentication, please remove the following codes.
    oSmtp.UserName = "test@emailarchitect.net" 
    oSmtp.Password = "testpassword" 

    ' If your SMTP server requires SSL connection, please add this line
    ' oSmtp.SSL_init

    ' Request read receipt
    oSmtp.ReadReceipt = True 

    ' Request both failure and success report
    oSmtp.DeliveryNotification = Notification_OnFailure Or _ 
                Notification_OnSuccess 

    MsgBox "start to send email ..." 

    If oSmtp.SendMail() = 0 Then 
        MsgBox "email was sent successfully!" 
    Else 
        MsgBox "failed to send email with the following error:" & oSmtp.GetLastErrDescription() 
    End If 

End Sub 

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If you have any comments or questions about above example codes, please add your comments here.
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