Powershell email alerts with html format

hi,

i have script working.
When it runs it check for files and send email alert if not files and also if has files.
Currently it sending the email alerts text format.
Request experts help, want to send email with htm format.
and for errors it should bold the text and color RED.
can help...


#Requires -version 3.0
$WarningPreference="Continue"
function Send-Mail
{
  param (
    [string] $Email_Subject,
    [string] $Email_Body,
    [string] $Email_Attachment
  )
  Send-MailMessage -SmtpServer 'mailserver.com' `
  -Body $Email_Body `
  -From 'donotreply@mail.com' `
  -To 'admin@mail.com' `
  -Subject $Email_Subject `
  -Attachments $Email_Attachment
}
function Send-Error
{
  Write-Host "Sending Error Alert @ $emaildate"
  $subject = "ACTION REQUIRED : Error Alert @ $emaildate"
  $logcontents = get-content $Logfile | Out-String
  $Body = "Dear All,`n`nThis email sent by system for errors highlighted below."  + $logcontents + "`n Regards,`n Job Process"
  Send-Mail -Email_Subject $subject -Email_Body $Body -Email_Attachment $Logfile }
function send-status
{
  Write-Host "Sending Success Alert @ $emaildate"
  $subject = "INFO : Success Alert @ $emaildate"
  $logcontents = get-content $Logfile | Out-String
  $Body = "Dear All,`n`nThis email sent by system for your information"  + $logcontents + "`n Regards,`n Job Process"
  Send-Mail -Email_Subject $subject -Email_Body $Body -Email_Attachment $Logfile }

  #check if source files exists
$sourcefolder="D:\ACES\SOURCE"
$backupFolder="D:\ACES\Archive"

$files   = 'CAT.xml', 'BAT.xml', 'RAT.xml'
$success = $true
foreach( $file in $files )
{
       $filename = Join-Path $sourcefolder $file
       if( Test-Path -LiteralPath $filename )
       {
              LogWrite "$( Get-Date -Format "yyyy-MM-dd HH:mm:ss" ) FILECHECK:`tFile exists: $filename"
       }
       else
       {
              $msj = "The source file '$fileName' doesn't exist"
              LogWrite "$( Get-Date -Format "yyyy-MM-dd HH:mm:ss" ) ERROR:`t$msj"
                    LogWrite -ForegroundColor Red $msj
              $success = $false
       }
}

if( -not $success  )
{
    LogWrite "`n$( Get-Date -Format "yyyy-MM-dd HH:mm:ss" ) ACTION REQUIRED:`tFiles missings($sourcefolder)"
    send-Error
    exit -1
}