PowerShell send E-Mail

Without smtp Server Authentication (with static IP or internal Mail Server)
Note: Most public mail servers only accept a message for there users and don’t forward it to other servers.

$DNSHostName = (Get-WmiObject win32_computersystem).DNSHostName;
$DNSDomainName = (Get-WmiObject win32_computersystem).Domain;

$From = "PowerShellMonitoring@$DNSHostName+'.'+$DNSDomainName";
$To = "edv@$DNSHostName+'.'+$DNSDomainName";
$Subject = "Failure $(@($isOnline).Count) Hosts down";
$SMTPServer = @(Resolve-DnsName -Name $DNSDomainName -Type MX | Select-Object -First 1).NameExchange;
$Port = 465

$Body = "MESSAGE BODY";
Send-MailMessage -From $From -Subject $Subject -To $To -Body $Body -SmtpServer $SMTPServer -UseSsl -Port $Port;

With authentication (dynamic ip or no internal Mail Server)
Note: Some public mail servers only accept the message if the “From-Address” is a valid DNS name (even @example.com)…

$DNSHostName = (Get-WmiObject win32_computersystem).DNSHostName;
$DNSDomainName = (Get-WmiObject win32_computersystem).Domain;

$From = "PowerShellMonitoring@$DNSHostName+'.'+$DNSDomainName";
$To = "edv@$DNSHostName+'.'+$DNSDomainName";
$Subject = "Failure $(@($isOnline).Count) Hosts down";
$SMTPServer = @(Resolve-DnsName -Name $DNSDomainName -Type MX | Select-Object -First 1).NameExchange;
$Port = 25

$Credential = New-Object System.Management.Automation.PSCredential("USERNAME", $(ConvertTo-SecureString "PASSWORD" -AsPlainText -Force))
$Body = "MESSAGE BODY";
Send-MailMessage -From $From -Subject $Subject -To $To -Body $Body -SmtpServer $SMTPServer -UseSsl -Credential $Credential -Port $Port;

With Outlook Api (so the message shows up in sent items):

# Folders
$FolderReports = "D:\Reports"; # Where your reports are

# SQL-Server settings
$Database = "Database" # Database name
$Server = "SERVER\SQLEXPRESS"; # SQL-Server Instanz

# Connect to SQL and query data, extract data to SQL Adapter
$SqlQuery = "SELECT [Report],[Filiale],[E-Mail] FROM [dbo].[verteiler]"; # Your distributiontable

# The mail
$MailSubject = "Enter subjectline here"
$MailBody = '
Sehr geehrter Kunde,
.......
......
.....
' # Can be plain text or html

# To use this script you must have a database that looks like this:
## Database Layout
## "Report","Filiale","E-Mail"
## "012","12","xyz@irgendwo.de"
## "033","33","abc@web.de"
## "112","112","caz@aol.com"

$SqlConnection = New-Object System.Data.SqlClient.SqlConnection
$SqlConnection.ConnectionString = "Data Source=$Server;Initial Catalog=$Database;Integrated Security = True"
$SqlCmd = New-Object System.Data.SqlClient.SqlCommand
$SqlCmd.CommandText = $SqlQuery
$SqlCmd.Connection = $SqlConnection
$SqlAdapter = New-Object System.Data.SqlClient.SqlDataAdapter
$SqlAdapter.SelectCommand = $SqlCmd
$DataSet = New-Object System.Data.DataSet
$nRecs = $SqlAdapter.Fill($DataSet)
$nRecs | Out-Null
$objTable = $DataSet.Tables[0]

# Send the E-Mail using Outlook
$ol = New-Object -comObject Outlook.Application
$objTable | ForEach-Object {
    $mail = $ol.CreateItem(0)
    $Mail.To = $_."E-Mail"
    $Mail.BCC = $mailBCC
    $Mail.Subject = $MailSubject
    if ($MailBody -like '*<HTML>*</HTML>*') {
        $Mail.HTMLBody = $MailBody
    } else {
        $Mail.Body = $MailBody
    }
    $Mail.Attachments.Add("$FolderReports\$($_."Report").pdf")
    $Mail.Send()
}