PureBasic

Office365 Send Email from Shared Mailbox

See more Office365 Examples

Demonstrates how to send email from a shared mailbox, from smtp.office365.com using OAuth2 authentication. PureBasic

IncludeFile "CkJsonObject.pb"
IncludeFile "CkEmail.pb"
IncludeFile "CkMailMan.pb"

Procedure ChilkatExample()

    success.i = 0

    ; 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 authorizaition via a web browser.  Afterwards, the access token
    ; can be repeatedly refreshed automatically.

    ; 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.
    jsonToken.i = CkJsonObject::ckCreate()
    If jsonToken.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    success = CkJsonObject::ckLoadFile(jsonToken,"qa_data/tokens/office365.json")

    mailman.i = CkMailMan::ckCreate()
    If mailman.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    CkMailMan::setCkSmtpHost(mailman, "smtp.office365.com")
    CkMailMan::setCkSmtpPort(mailman, 587)
    CkMailMan::setCkStartTLS(mailman, 1)

    ; In case of shared mailbox access using OAuth, the application needs to obtain the access token on behalf of a user
    ; but replace the SMTP username with the email address of the shared mailbox.

    ; Login using the shared mailbox email address for the username, and the access token for the password.
    ; See Office 365 SASL XOAUTH2 format 

    ; Use your Office365 email address for the SmtpUsername.
    CkMailMan::setCkSmtpUsername(mailman, "SHARED_MAILBOX_EMAIL_ADDRESS")
    CkMailMan::setCkOAuth2AccessToken(mailman, CkJsonObject::ckStringOf(jsonToken,"access_token"))

    ; Create a new email object
    email.i = CkEmail::ckCreate()
    If email.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    CkEmail::setCkSubject(email, "This is a test")
    CkEmail::setCkBody(email, "This is a test")
    CkEmail::setCkFrom(email, "MY_NAME <SHARED_MAILBOX_EMAIL_ADDRESS>")
    success = CkEmail::ckAddTo(email,"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.  
    success = CkMailMan::ckSendEmail(mailman,email)
    If success <> 1
        Debug CkMailMan::ckLastErrorText(mailman)
        CkJsonObject::ckDispose(jsonToken)
        CkMailMan::ckDispose(mailman)
        CkEmail::ckDispose(email)
        ProcedureReturn
    EndIf

    success = CkMailMan::ckCloseSmtpConnection(mailman)
    If success <> 1
        Debug "Connection to SMTP server not closed cleanly."
    EndIf

    Debug "Mail Sent!"


    CkJsonObject::ckDispose(jsonToken)
    CkMailMan::ckDispose(mailman)
    CkEmail::ckDispose(email)


    ProcedureReturn
EndProcedure