PowershellでSMTP認証メール送信
$Credentials = Get-Credential Send-MailMessage -To to@xxx.com -Subject test -From from@xxx.com -SmtpServer smtp.sendgrid.net -Port 587 -Credential $Credentials
$Credentials = Get-Credential Send-MailMessage -To to@xxx.com -Subject test -From from@xxx.com -SmtpServer smtp.sendgrid.net -Port 587 -Credential $Credentials