Send Email of PowerShell Output - powershell

Question

I'm new to PowerShell, I'm running Windows Server 2012 R2. The following Script gives me Output what I want but in the message the output is not appearing and it saying the Body cannot be "null" or "empty".
$fileToLocate = "*"
$Directories = #(
"C:\CtvFTPSite\AE1\ASN\Undelivered\",
"C:\CtvFTPSite\AE1\Invoices\Undelivered\",
"C:\CtvFTPSite\AE1\SO\Undelivered\",
"C:\CtvFTPSite\AE2\ASN\Undelivered\",
"C:\CtvFTPSite\AE2\Invoices\Undelivered\",
"C:\CtvFTPSite\AE2\SO\Undelivered\",
"C:\CtvFTPSite\BH1\ASN\Undelivered\",
"C:\CtvFTPSite\BH1\Invoices\Undelivered\",
"C:\CtvFTPSite\BH1\SO\Undelivered\",
"C:\CtvFTPSite\KW1\ASN\Undelivered\",
"C:\CtvFTPSite\KW1\Invoices\Undelivered\",
"C:\CtvFTPSite\KW1\SO\Undelivered\",
"C:\CtvFTPSite\OM1\ASN\Undelivered\",
"C:\CtvFTPSite\OM1\Invoices\Undelivered\",
"C:\CtvFTPSite\OM1\SO\Undelivered\",
"C:\CtvFTPSite\SA1\ASN\Undelivered\",
"C:\CtvFTPSite\SA1\Invoices\Undelivered\",
"C:\CtvFTPSite\SA1\SO\Undelivered\"
)
$filesUndelivered = Join-Path -Path $Directories -ChildPath $fileToLocate | Where-Object{Test-Path $_} | ForEach-Object{
Get-ChildItem $Directories -Recurse | % { Write-Host $_.FullName }
}
$Max_mins = "-5"
$Curr_date = get-date
$username = "myusername#myemail.com"
$password = Get-Content C:\security\string.txt | ConvertTo-SecureString
$cred = new-object -typename System.Management.Automation.PSCredential `
-argumentlist $username, $password
$localIpAddress = $(ipconfig | where {$_ -match 'IPv4.+\s(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})' } | out-null; $Matches[1])
[string]$messagebody ="$filesUndelivered"
[string]$titlefailed ="Urgent You Have Files in Undelivered Folder in $localIpAddress in $env:computername"
$portno = "25"
$smtpsrv = "mail.server.com"
$smtpto = "myusername#myemail.com"
$smtpfrom ="myusername#myemail.com"
if ($filesfailed.Count)
{
foreach ($file in $filesUndelivered) {[string]$messagebody += $file.FullName + "`r`n"}
Send-MailMessage -To $smtpto -From $smtpfrom -port $portno -SmtpServer $smtpsrv -Credential $cred -Subject $titlefailed -Body $messagebody
}

Answer 1

Fixed
$fileToLocate = "*"
$failedpath = #(
"C:\CtvFTPSite\AE1\ASN\Undelivered\",
"C:\CtvFTPSite\AE1\Invoices\Undelivered\",
"C:\CtvFTPSite\AE1\SO\Undelivered\",
"C:\CtvFTPSite\AE2\ASN\Undelivered\",
"C:\CtvFTPSite\AE2\Invoices\Undelivered\",
"C:\CtvFTPSite\AE2\SO\Undelivered\",
"C:\CtvFTPSite\BH1\ASN\Undelivered\",
"C:\CtvFTPSite\BH1\Invoices\Undelivered\",
"C:\CtvFTPSite\BH1\SO\Undelivered\",
"C:\CtvFTPSite\KW1\ASN\Undelivered\",
"C:\CtvFTPSite\KW1\Invoices\Undelivered\",
"C:\CtvFTPSite\KW1\SO\Undelivered\",
"C:\CtvFTPSite\OM1\ASN\Undelivered\",
"C:\CtvFTPSite\OM1\Invoices\Undelivered\",
"C:\CtvFTPSite\OM1\SO\Undelivered\",
"C:\CtvFTPSite\SA1\ASN\Undelivered\",
"C:\CtvFTPSite\SA1\Invoices\Undelivered\",
"C:\CtvFTPSite\SA1\SO\Undelivered\"
)
$Max_mins = "-5"
$Curr_date = get-date
$username = "username#email.com"
$password = Get-Content C:\security\string.txt | ConvertTo-SecureString
$cred = new-object -typename System.Management.Automation.PSCredential `
-argumentlist $username, $password
$filesfailed = Get-ChildItem -Path $failedpath | Where{$_.CreationTime -lt ($Curr_date).addminutes($Max_mins)}
$localIpAddress = $(ipconfig | where {$_ -match 'IPv4.+\s(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})' } | out-null; $Matches[1])
[string]$messagebody =""
[string]$titlefailed ="Urgent You Have Files in Undelivered Folder in $localIpAddress in $env:computername"
$portno = "25"
$smtpsrv = "mail.server.net"
$smtpto = "username#email.com"
$smtpfrom ="username#email.com"
if ($filesfailed.Count)
{
foreach ($file in $filesfailed) {[string]$messagebody += $file.FullName + "`r`n"}
Send-MailMessage -To $smtpto -From $smtpfrom -port $portno -SmtpServer $smtpsrv -Credential $cred -Subject $titlefailed -Body $messagebody
}