freeswitch/conf/insideout/autoload_configs/voicemail.conf.xml

<configuration name="voicemail.conf" description="Voicemail">
  <settings>
  </settings>
  <profiles>
    <profile name="default">
      <param name="file-extension" value="wav"/>
      <param name="terminator-key" value="#"/>
      <param name="max-login-attempts" value="3"/>
      <param name="digit-timeout" value="10000"/>
      <param name="min-record-len" value="3"/>
      <param name="max-record-len" value="300"/>
      <param name="tone-spec" value="%(1000, 0, 640)"/>
      <param name="callback-dialplan" value="XML"/>
      <param name="callback-context" value="default"/>
      <param name="play-new-messages-key" value="1"/>
      <param name="play-saved-messages-key" value="2"/>
      <param name="main-menu-key" value="0"/>
      <param name="config-menu-key" value="5"/>
      <param name="record-greeting-key" value="1"/>
      <param name="choose-greeting-key" value="2"/>
      <param name="change-pass-key" value="6"/>
      <param name="record-name-key" value="3"/>
      <param name="record-file-key" value="3"/>
      <param name="listen-file-key" value="1"/>
      <param name="save-file-key" value="2"/>
      <param name="delete-file-key" value="7"/>
      <param name="undelete-file-key" value="8"/>
      <param name="email-key" value="4"/>
      <param name="pause-key" value="0"/>
      <param name="restart-key" value="1"/>
      <param name="ff-key" value="6"/>
      <param name="rew-key" value="4"/>
      <param name="record-silence-threshold" value="200"/>
      <param name="record-silence-hits" value="2"/>
      <param name="web-template-file" value="web-vm.tpl"/>
      <!-- if you need to change the sample rate of the recorded files e.g. gmail voicemail player -->
      <!--<param name="record-sample-rate" value="11025"/>-->
      <!-- the next two both must be set for this to be enabled
           the extension is in the format of <dest> [<dialplan>] [<context>]
       -->
      <param name="operator-extension" value="operator XML default"/>
      <param name="operator-key" value="9"/>
      <param name="vmain-extension" value="vmain XML default"/>
      <param name="vmain-key" value="*"/>
      <!-- playback created files as soon as they were recorded by default -->
      <!--<param name="auto-playback-recordings" value="true"/>-->
      <email>
	<param name="template-file" value="voicemail.tpl"/>
	<param name="notify-template-file" value="notify-voicemail.tpl"/>
	<!-- this is the format voicemail_time will have -->
        <param name="date-fmt" value="%A, %B %d %Y, %I %M %p"/>
        <param name="email-from" value="${voicemail_account}@${voicemail_domain}"/>
      </email>
      <!--<param name="storage-dir" value="/tmp"/>-->
      <!--<param name="odbc-dsn" value="dsn:user:pass"/>-->
      <!--<param name="record-comment" value="Your Comment"/>-->
      <!--<param name="record-title" value="Your Title"/>-->
      <!--<param name="record-copyright" value="Your Copyright"/>-->


    </profile>
  </profiles>
</configuration>