functions/Send-JS7Mail.ps1
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function Send-JS7Mail { <# .SYNOPSIS Send e-mail .DESCRIPTION This cmdlet can be used to send e-mail. The cmdlet will not work for mail servers that enforce SMTP over SSL instead of TLS, see https://docs.microsoft.com/en-us/dotnet/api/system.net.mail.smtpclient.enablessl?view=net-5.0 .PARAMETER Server Host name or IP address of the SMTP mail server. .PARAMETER Port Numeric port for the SMTP protocol: * Basic SMTP frequently makes use of port 25. * Explicit SSL frequently makes use of port 587. * Implicit SSL frequently makes use of port 465. .PARAMETER From The e-mail address that sends the information. .PARAMETER To The recipient of the e-mail. .PARAMETER Subject The subject of the e-mail. .PARAMETER Body The body of the e-mail. By default the body is plain text. When using HTML e-mail consider to use the -BodyAsHtml switch. .PARAMETER Cc The carbon copy recipients of e-mail. .PARAMETER Bcc The blind carbon copy recipients of e-mail. .PARAMETER Attachments Accepts an array of file names including the full path that should be attached to the e-mail. .PARAMETER Credential The credential including user name and password of the account that authenticates with the SMTP mail server. This parameter hqs to be specified for SMTP mail servers that require authentication. A credential object can be created like this: $mailCredential = New-Object System.Net.NetworkCredential( "info@sos-berlin.com", "secret" ) .PARAMETER Timeout The timout in milliseconds that JS7 will wait for the connection to the mail server to be established. Default: 15000 .PARAMETER UseSSL Forces one of Explicit SSL or Implicit SSL to be used. Without this switch e-mail body and credentials will be sent as unencrypted plain text through the network. .PARAMETER SSLProtocol This parameter can be used to specify the TLS protocol version that should be used. The protocol version is agreed on between the mail server and the PowerShell client. Both server and client have to identify a common protocol version. * -SSLProtocol 'Tls' ** use any TLS protocol version available * -SSLProtocol 'Tls12' ** use TLS protocol version 1.2 only * -SSLProtocol 'Tls11,Tls12' ** use TLS protocol version 1.1 or 1.2 only .PARAMETER UseDefaultCredentials This parameter specifies that default credentials of the logged in user should be used if SMTP authentication is required. .EXAMPLE Send-JS7Mail -Server 'smtp.example.com' -Port 25 -To 'user@example.com' -Subject 'some subject' -Body '<html><head><body>Hi there</body></head></html>' -BodyAsHtml -UseSSL Sends an HTML e-mail via the respective mail server. #> [cmdletbinding()] param ( [Parameter(Mandatory=$True,ValueFromPipeline=$False,ValueFromPipelinebyPropertyName=$True)] [string] $Server, [Parameter(Mandatory=$True,ValueFromPipeline=$False,ValueFromPipelinebyPropertyName=$True)] [int] $Port, [Parameter(Mandatory=$True,ValueFromPipeline=$False,ValueFromPipelinebyPropertyName=$True)] [string] $From, [Parameter(Mandatory=$True,ValueFromPipeline=$False,ValueFromPipelinebyPropertyName=$True)] [string[]] $To, [Parameter(Mandatory=$True,ValueFromPipeline=$False,ValueFromPipelinebyPropertyName=$True)] [string] $Subject, [Parameter(Mandatory=$True,ValueFromPipeline=$False,ValueFromPipelinebyPropertyName=$True)] [string] $Body, [Parameter(Mandatory=$False,ValueFromPipeline=$False,ValueFromPipelinebyPropertyName=$True)] [string[]] $Cc, [Parameter(Mandatory=$False,ValueFromPipeline=$False,ValueFromPipelinebyPropertyName=$True)] [string[]] $Bcc, [Parameter(Mandatory=$False,ValueFromPipeline=$False,ValueFromPipelinebyPropertyName=$True)] [string[]] $Attachments, [Parameter(Mandatory=$False,ValueFromPipeline=$False,ValueFromPipelinebyPropertyName=$True)] [System.Management.Automation.PSCredential] $Credential, [Parameter(Mandatory=$False,ValueFromPipeline=$False,ValueFromPipelinebyPropertyName=$True)] [int] $Timeout = 15000, [Parameter(Mandatory=$False,ValueFromPipeline=$False,ValueFromPipelinebyPropertyName=$True)] [switch] $BodyAsHtml, [Parameter(Mandatory=$False,ValueFromPipeline=$False,ValueFromPipelinebyPropertyName=$True)] [switch] $UseSSL, [Parameter(Mandatory=$False,ValueFromPipeline=$True,ValueFromPipelinebyPropertyName=$True)] [string] $SSLProtocol, [Parameter(Mandatory=$False,ValueFromPipeline=$False,ValueFromPipelinebyPropertyName=$True)] [switch] $UseDefaultCredentials ) Begin { $stopWatch = Start-JS7StopWatch } Process { $message = New-Object Net.Mail.MailMessage $message.From = $From foreach( $item in $To ) { $message.To.Add( $item ) } $message.Subject = $Subject $message.Body = $Body if ( $BodyAsHtml ) { $message.IsBodyHTML = $BodyAsHtml } if ( $Cc ) { foreach( $item in $Cc ) { $message.Cc.Add( $item ) } } if ( $Bcc ) { foreach( $item in $Bcc ) { $message.Bcc.Add( $item ) } } foreach( $attachment in $Attachments ) { $message.Attachments.Add( $attachment ) } $smtp = New-Object Net.Mail.SmtpClient( $Server, $Port ) $smtp.Timeout = $Timeout if ( $UseSSL ) { $smtp.EnableSSL = $UseSSL if ( $SSLProtocol ) { # -SSLProtocol 'Tls' # -SSLProtocol 'Tls12' # -SSLProtocol 'Tls,Tls11,Tls12' [System.Net.ServicePointManager]::SecurityProtocol = $SSLProtocol } } if ( $Credential ) { # the sequence of these lines is important, see https://github.com/dotnet/runtime/issues/23779 # UseDefaultCredentials sets the credential to null and has to precede setting Network Credentials $smtp.UseDefaultCredentials = $UseDefaultCredentials $smtp.Credentials = New-Object System.Net.NetworkCredential( $Credential.UserName, $Credential.Password ) } $smtp.send( $message ) } End { Trace-JS7StopWatch -CommandName $MyInvocation.MyCommand.Name -StopWatch $stopWatch } } |