AutoFlood

AutoFlood periodically sends a single-line message in a chat channel. It’s designed for advertisement for guild recruitment, crafting, in-game events…

/flood [on|off] : Start / stops sending the message.
/floodmsg : Sets the message. Supports hyperlinks to items, spells, crafts, achievements…
/floodchan : Sets the channel. Accepted values : say, guild, raid, party, bg and channel number
/floodrate : Sets the period (in seconds), minimum 10
/floodinfo : Displays the message and the parameters.
/floodhelp : Displays this help message.
The settings are saved per character/realm.