Auto emailing tasks

We have a website form where tasks/jobs are posted. These are stored in a mysql database. A cron job which runs every hour selects the tasks by area and by type and creates an html listing which is then published for everyone to view. We'd like to added an automated email function which will send out each new task posted to users which have registered for these tasks - by area or type or both. The script to be in php using an mysql database. Should be simple enough for php coders. ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform PHP Mysql