"Password123" | ConvertTo-SecureString -AsPlainText -Force | ConvertFrom-SecureString | Out-File "C:FolderPassword.txt"
$EmailFrom = "emailaddress@gmail.com"
$EmailTo = "otheremailaddress@gmail.com"
$Subject = "Log file from server"
$Subject = "Subject"
$Body = "Here is the log file from the server"
$File = "C:FolderLogFile.txt"
$attachment = New-Object System.Net.Mail.Attachment($File,'text/plain')

$mailmessage = New-Object system.net.mail.mailmessage
$mailmessage.from = ($EmailFrom)
$mailmessage.To.add($emailto)
$mailmessage.Subject = $Subject
$mailmessage.Body = $Body
$mailmessage.Attachments.Add($attachment)

$SMTPServer = "smtp.gmail.com"
$SMTPClient = New-Object Net.Mail.SmtpClient($SmtpServer, 587)
$SMTPClient.EnableSsl = $true

$username = "emailaddress@gmail.com"
$pass = Get-Content "C:FolderPassword.txt" | ConvertTo-SecureString -AsPlainText -Force

$SMTPClient.Credentials = New-Object System.Net.NetworkCredential($username, $pass);

$SMTPClient.Send($mailmessage)

$pass = "Password123"

$user = "UsernameGoesHere"
$passwordtostore = 'PasswordGoesHere'
$secureStringPWD = $passwordtostore | ConvertTo-SecureString -AsPlainText -Force
$secureStringText = $secureStringPWD | ConvertFrom-SecureString
Set-Content "C:tempauthenticationfile.cfg" $secureStringText
# Retrieve password
$pwdin = Get-Content "C:tempauthenticationfile.cfg"
$password = $pwdin | ConvertTo-SecureString
$creds = New-Object System.Management.Automation.PSCredential -ArgumentList $user,$password