Scraper/Emailer for Craigslist

I need a program that does the following:

1.)Scrapes selected catorgies on Craigslist.org pages. It will be able to select any and all cities and catorgories on CL.
2.)It will be able to enter key words, to limit searches.
3.)It will extract emails, enter into a txt or cvs file
4.)It will to able to scan for duplicte emails and eliminate emails ending with craigslist.org
5.)It will then double as a email mailer, with the ability to work with a third party server and do the following:

Sends HTML email or Plain-Text or both

Limit or Throttle Message Sending / Drip Delivery Speed

Test Message Send

Attach files for sending

Configurable SMTP port

List duplicate deletion

List Filtering

Exclusion list

Inclusion list

I would want to have the source code, that I may make future improvements.