16. The system of claim 9 , wherein the system further comprises instructions to: perform natural language processing on an email addressed to a user to generate another annotated message; analyze the another annotated message pursuant to a grammar; and classify a portion of the email as a task assigned to the user based on the analysis of the another annotated message.
9. A system including memory and one or more processors operable to execute instructions stored in the memory, comprising instructions to: perform natural language processing on a voicemail addressed to a user to generate an annotated message, wherein the voicemail message was composed by another individual different than the user; analyze the annotated message pursuant to a grammar; classify a portion of the voicemail as a task assigned to the user by the another individual based on the analysis of the annotated message; and select, from a plurality of distinct user interfaces associated with a plurality of distinct software applications, based on the analysis of the annotated message, a user interface operable by the user to fulfill the task.