Module send_mail 

Send a Microsoft Graph message (POST /me/sendMail) in JSON or MIME format; the message is saved to Sent Items.

https://learn.microsoft.com/en-us/graph/api/user-sendmail

Structs

MsgraphMailSend

Send a message described as a JSON MsgraphMessage.

MsgraphMailSendMime

Send a message given as raw RFC 5322 MIME bytes; the MIME is base64-encoded and posted as text/plain, as Graph requires.