Send email trough SendGrid SMTP relay with powershell

SendGridEmail.ps1

function Send-GridEmail(){
	Param(
		[Parameter(Mandatory=$true)]
		[string]$From,
		[Parameter(Mandatory=$true)]
		[string[]]$To,
		[Parameter(Mandatory=$true)]
		[string]$Subject,
		[Parameter(Mandatory=$true)]
		[string]$Body,
		[Parameter(Mandatory=$true)]
		[string[]]$Cc,
		[Parameter(Mandatory=$false)]
		[string[]]$Attachments = $null
	)

	$Username ="apikey"
	$Password = ConvertTo-SecureString "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" -AsPlainText -Force
	$credential = New-Object System.Management.Automation.PSCredential $Username, $Password
	$SMTPServer = "smtp.sendgrid.net"

	Send-MailMessage -SmtpServer $SMTPServer -Credential $credential -UseSsl -Port 587 -From $From -To $To -Cc $Cc -Subject $Subject -Body $Body -BodyAsHtml -Attachments $Attachments -DeliveryNotificationOption OnSuccess, OnFailure
}