1. A voice messaging system for converting an audio voice message from a caller to text, the voice messaging system comprising: a plurality of conversion resources for converting the audio voice message into the text for an intended recipient, the plurality of conversion resources comprising: a network connection to a transcription service that uses at least one human operator to assist in converting the audio voice message into the text; at least one automatic speech recognition (ASR) system to automatically recognize at least some of the audio voice message to assist the at least one human operator in converting the audio voice message into the text; a pre-processing front end configured to: receive the audio voice message from the caller; optimize the quality of the audio voice message; determine a confidence level associated with converting the audio voice message; and determine an appropriate conversion strategy by selecting a particular conversion resource to process the audio voice message based on the confidence level, wherein determining the appropriate conversion strategy based on the confidence level comprises, if the confidence level is low, flagging the audio voice message as unconvertible and sending a notice that an unconvertible message was received; and a text output device configured to output the text.
8. The system of claim 1 , wherein the pre-processing front end determines the appropriate conversion strategy based on the confidence level by: if the confidence level is high, sending the text recognized by the at least one ASR system to the at least one human operator for quality assurance testing.