This is a relatively small project. We have a simple database in MySQL. In this database we store information about various locations. When we update information, eg a phone number or address is desired that it automatically eg every night, generates an e-mail informing about the update and sent out to a group. The update email should have a standard text, plus information about it, or the various changes. If no change, no e-mail.
The recipients of this message are stored in another MySQL database and may change over time.
The script must be written in such a way that we can easily change the sender and content of the email.