Send-MgUserMail: Send a new message using MIME format

[Viajaz]

Support for sending a new message using MIME format with Send-MgUserMail

https://docs.microsoft.com/en-us/graph/api/user-sendmail?view=graph-rest-1.0&tabs=http#example-4-send-a-new-message-using-mime-format

[Viajaz]

For those in the same position, use Invoke-MgGraphRequest for now:

Delegated Mail.Send permission

Invoke-MgGraphRequest -Method POST -Uri "https://graph.microsoft.com/v1.0/me/sendMail" -Body $RequestBody -ContentType 'text/plain'

Application level Mail.Send permission

Invoke-MgGraphRequest -Method POST -Uri "https://graph.microsoft.com/v1.0/users/$($UserId)/sendMail" -Body $RequestBody -ContentType 'text/plain'

An example using Mailkit (DE0005)

Add-Type -Path MailKit.dll
$Message = [MimeKit.MimeMessage]::new()
$Message.From.Add([MimeKit.InternetAddress]'sender@example.com')
$Message.To.Add([MimeKit.InternetAddress]'receiver@example.com')
$Message.Subject = 'Test'
$BodyBuilder = [MimeKit.BodyBuilder]::new()
$BodyBuilder.TextBody = 'This is a test message'
$Message.Body = $BodyBuilder.ToMessageBody()
$MessageStream = [System.IO.MemoryStream]::new()
$Message.WriteTo($MessageStream)
$MessageStream.Position = 0
$MessageStreamReader = [System.IO.StreamReader]::new($MessageStream, [System.Text.Encoding]::UTF8)
$MessageMIME = $MessageStreamReader.ReadToEnd()
$RequestBody = [Convert]::ToBase64String([System.Text.Encoding]::UTF8.GetBytes($MessageMIME))
Invoke-MgGraphRequest -Method POST -Uri "https://graph.microsoft.com/v1.0/me/sendMail" -Body $RequestBody -ContentType 'text/plain'

[ddyett]

@peombwa is this something implemented in V2.

[peombwa]

@ddyett, MIME format is currently not supported by all SDKs due to missing MIME path in the metadata used to generate the SDKs. A workaround is to fall back to Invoke-MgGraphRequest as documented #844 (comment). I'll transfer the issue to the metadata repo for visibility.

[peombwa]

Transferred to microsoftgraph/msgraph-metadata#389.