Chicago also has transfer tax stamps that need to be taken into accout.

Engineer stamped?

Or google a form..And proof of advertising is like posting your ad on Craigslist you can print it off.or take photo of sign outside time stamped ,, usually you wouldn't need it but a precaution.

Also, after purchasing the list are you able to use that list to upload to another website to actually send the mail campaign out or does it have to be done manually by writing all the letters, stamps and dropping off at the post office?

More people out of the work force, food stamps, more people renting, etc.

Thus avoiding doc stamps, transfer tax (each state has their own type of fees) and a new title policy along with any other fees associated with a second closing. 

This is mainly because we hand- address our letters and use real stamps so it looks like authentic communication.

I also like that there is a date time stamp when they open the invoice email.

I expect that this online service would likely fall outside of those lenders' approved lists, at least for now.Also, this approach would produce a different physical end product than the traditional signature, stamp, and ID checking process.  

$0.47 per stamp, that's $7520 out of pocket.I can almost guarantee you that if that same person was a licensed agent and sent 16,000 letters that simply said "Hi, I'm a local real estate agent, I know our area and community, I'm passionate about real estate and helping people, and I'm also a volunteer at XYZ Charity Event coming up next week if you'd like to come and meet me, or if not hey let me know if you or anyone you know could use my assistance" (polish it a little but you get the idea) and included 4 business cards in each of the sixteen thousand mailers... that'll get "slightly" more than zero responses and likely earn that person "slightly" more than zero dollars and zero cents!