Companies are failing to effectively manage use of e-mail and instant messaging, according to a survey by The ePolicy Institute and the American Management Association. The two organizations recently surveyed 840 employers about their e-mail and instant messaging policies. The groups\u2019 warning: These policies need work. Though more companies are training employees in the proper use of e-mail, more than a third of respondents either didn\u2019t know or weren\u2019t sure about the difference between electronic records that need to be retained and insignificant messages that may be deleted. In addition:79% of the employers have implemented a written e-mail policy. 54% conduct e-mail policy training.35% have an e-mail retention policy in place.25% have terminated an employee for violating an e-mail policy.21% have had employee e-mail and IM subpoenaed during a lawsuit.11% use software to monitor, purge, retain or control IM.