This cgi program automatically emails a message to your client list. The message is contained in a file which can be named according to the day of the month, so you can automatically send a different message for each day of the month, if you so wish
SibSoft CommuniMail is a Mailing List Manager and Newsletter Script with bounce back and WYSIWYG editor. For Linux and Windows servers, mySQL and flat file (CSV) database support. Free install by professional admin.
ContactsCollector automatically adds e-mail addresses for people you correspond with to your Address Book: it checks your outgoing mail for a new email addresses, retrieves the new contact name, and adds the contact. As simple as that.