This package can be used to send bulk mail to recipients taken from a file or database. It executes a given SQL query that extracts a list of recipients e-mail addresses. The class supports querying many different databases, such as: MySQL, PostgreSQL, Firebird, FrontBase, SQLite, mini-SQL, Sybase, Oracle, Ingres, etc.. The listed recipients e-mail addresses are validated before sending using a regular expression. The messages are sent to the listed recipients using the PHP mail() function or through a given SMTP server. SMTP servers that require authentication are supported. The messages to be send may include multiple attachments. There is also sub-class that can import a list of e-mail addresses to the database.