Safely Send Bulk Email?

Recently there was a request about sending bulk email which was building a potentially dangerous collection of answers which could lead to someone easily creating a spam engine. While there are legitimate reasons to send bulk email, one must be sure to follow all the applicable rules. This means following RFC 2821 and forming properly crafted email messages. In the US, it also means complying with fedral law regarding the sending of unsolicited email (express permission must be captured through direct user initiation e.g. user's must choose to check the box to receive your email), and that means including a removal instruction as well as valid contact information.

To that end, here is an example program for sending a mass email to a list of recipient addresses located in a database. The code only cares about recieving an array of DataRow objects, so any database for which you can fill a DataTable will work.To run this example, simply place a Button on a Form and paste in the following code:

Option Strict On
''' <summary>
''' Example of safely sending bulk emails
''' </summary>

[code]....