Bulk Emailer script/form - RECIPIENT-specific (w/First name)

Hi Freelancers! We're needing a quick, VERY rough script/form designed for internal use only (our clients won't see it, so it can be VERY unpolished, as long as it works correctly). We need to do the following: - Input 1000 or so email addresses & first names per day (from existing excel or CSV file, already prepared by us) - Send these 1000 emails to the addresses, with the same message, but SPECIFIC to each recipient's FIRST NAME - This needs to be done in a matter of minutes or seconds, all 1000 emails sent out at once - NEEDS TO BE SUPER EASY AND SIMPLE FOR US TO USE - NO FLASHY ANYTHING! :) For example: ----------------------------------- From: Us To: <THEIR EMAIL> Hello <NAME>, Thanks for responding, please visit our website for more info. Thanks! ----------------------------------- The script/form will be hosted on our web site. Thanks! :)