nlog.config

<?xml version="1.0" encoding="utf-8" ?>
<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd"
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:schemaLocation="http://www.nlog-project.org/schemas/NLog.xsd NLog.xsd"
      autoReload="true"
      throwExceptions="true"
      internalLogLevel="Off" internalLogFile="c:\temp\nlog-internal.log">
  <!-- internalLogLevel="Trace"> -->

  <!-- enable asp.net core layout renderers -->
  <extensions>
    <add assembly="NLog.Web.AspNetCore"/>
  </extensions>

  <variable name="brief"   value="${longdate} | ${level:uppercase=true} | ${logger} | ${message}" />
  <variable name="verbose" value="${longdate} | ${processid} | ${processname} | ${level:uppercase=true} | ${logger} | ${message}${onexception:inner=${newline}${exception:format=tostring}}" />
  <variable name="logPath" value="..\..\..\App_Data\logs" />
  <variable name="emailSubject" value="(DEBUG) --appname here--" />
  <variable name="emailTo"      value="me@nope.com" />
  <variable name="emailFrom"    value="noreply@nope.com" />

  <targets async="true">
    <target name="file"      type="File" layout="${verbose}" fileName="${logPath}\log.current.log" archiveFileName="${logPath}\log.{#}.log" archiveNumbering="Date" archiveDateFormat="yyyyMMddHHmm" archiveEvery="Day" maxArchiveFiles="7" concurrentWrites="true" keepFileOpen="false" />
    <target name="errorSmtp" type="Mail" layout="${verbose}" subject="${emailSubject}" to="${emailTo}" from="${emailFrom}" useSystemNetMailSettings="true" />
  </targets>
  <rules>
    <logger name="Microsoft.*" maxLevel="Info"  final="true" /> <!-- BlackHole without writeTo -->
    <logger name="*"           minlevel="Debug" writeTo="file" />
    <logger name="*"           minlevel="Warn"  writeTo="errorSmtp" />
    <!--<logger name="*" minlevel="Debug" appendTo="database" />-->
    <!--Skip non-critical Microsoft logs and so log only own logs-->
    <!-- minlevel values="Trace", "Debug", "Info", "Warn", "Error", "Fatal" -->
  </rules>
</nlog>