Hi,
Recently I've been through your requirement so I can assure that It is doable with affordable cost/time estimation. In these tough times, where it is hard to maintain the top line, we can help share the bottom line for you.
We have a large team for all Website/Application related services which can execute the campaigns at a much lower cost than what you have in house.
Do let me know if you are interested and I would be happy to send in more details.
I look forward to your mail.