Verify my mails (bulk mailing) - 15 million email list - repost

Avg Bid (USD)
Project Budget (USD)
$30 - $250

Project Description:
We require about 500K emails verified. The list little old. Wated results in excel sheet. I will give you a txt files, you have to send me an excel with old list and new list of working only emails.
Once you bid and aswer my questions, you will receive a sample txt file. I want you do a sample and send me the results as I mentioned. Lowest and fastest will get the bid.

Tell me how you would:
1) Verify my list - give me details please
2) How long it would take for you to complete this task?
3) Tell me if you have done something similar in the past
4) What is the largest list you have verified in the past?
Please reply with the 4 answers, rather than your generic reply to a project on freelancer.

Additional Project Description:
06/09/2013 at 19:22 BST
The is not for 15 million emails : The emails to be verified are just about 500K. Thos who do not read my requirements please do not bid.


Skills required:
Bulk Marketing, Email Marketing, Internet Marketing, Marketing, Sales
About the employer:
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