AutoIt

Office365 Send Email using SMTP with OAuth2 Authentication

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Demonstrates how to send email from smtp.office365.com using OAuth2 authentication. AutoIt

Local $bSuccess = False

; This example requires the Chilkat API to have been previously unlocked.
; See Global Unlock Sample for sample code.

; An Office365 OAuth2 access token must first be obtained prior
; to running this code.

; Getting the OAuth2 access token for the 1st time requires the O365 account owner's 
; interactive authorization via a web browser.  Afterwards, the access token
; can be repeatedly refreshed automatically (with no user interaction).

; See the following examples for getting and refreshing an OAuth2 access token

; Get Office365 SMTP/IMAP/POP3 OAuth2 Access Token
; Refresh Office365 SMTP/IMAP/POP3 OAuth2 Access Token

; First get our previously obtained OAuth2 access token.
$oJsonToken = ObjCreate("Chilkat.JsonObject")
$bSuccess = $oJsonToken.LoadFile("qa_data/tokens/office365.json")

$oMailman = ObjCreate("Chilkat.MailMan")

$oMailman.SmtpHost = "smtp.office365.com"
$oMailman.SmtpPort = 587
$oMailman.StartTLS = True

; Use your Office365 email address for the SmtpUsername.
$oMailman.SmtpUsername = "OFFICE365_EMAIL_ADDRESS"
$oMailman.OAuth2AccessToken = $oJsonToken.StringOf("access_token")

; Create a new email object
$oEmail = ObjCreate("Chilkat.Email")

$oEmail.Subject = "This is a test"
$oEmail.Body = "This is a test"
$oEmail.From = "MY_NAME <OFFICE365_EMAIL_ADDRESS>"
$bSuccess = $oEmail.AddTo("John Doe","somebody@example.com")

; Call SendEmail to connect to the SMTP server and send.
; The connection (i.e. session) to the SMTP server remains
; open so that subsequent SendEmail calls may use the
; same connection.  
$bSuccess = $oMailman.SendEmail($oEmail)
If ($bSuccess <> True) Then
    ConsoleWrite($oMailman.LastErrorText & @CRLF)
    Exit
EndIf

; If SendEmail failed because of "Failed to get initial SMTP Response", then it may be 
; a firewall or anti-virus blocking communications.
; See https://cknotes.com/smtp-office365-com-failed-to-get-initial-smtp-response/

$bSuccess = $oMailman.CloseSmtpConnection()
If ($bSuccess <> True) Then
    ConsoleWrite("Connection to SMTP server not closed cleanly." & @CRLF)
EndIf

ConsoleWrite("Mail Sent!" & @CRLF)