B4X

Office365 IMAP with OAuth2 Authentication

See more Office365 Examples

Demonstrates how to authenticate using OAuth2 with outlook.office365.com. B4X

Dim success As Boolean = False

'  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.
Dim jsonToken As ChilkatJsonObject
jsonToken.Initialize
success = jsonToken.LoadFile("qa_data/tokens/office365.json")
If success = False Then
    Log("Failed to open the office365 OAuth JSON file.")
    Return
End If


Dim imap As ChilkatImap
imap.Initialize("imap")

imap.Ssl = True
imap.Port = 993

'  Connect to the Office365 IMAP server.
success = imap.Connect("outlook.office365.com")
If success <> True Then
    Log(imap.LastErrorText)
    Return
End If


'  Use OAuth2 authentication.
imap.AuthMethod = "XOAUTH2"

'  Login using our username (i.e. email address) and the access token for the password.
success = imap.Login("OFFICE365_EMAIL_ADDRESS", jsonToken.StringOf("access_token"))
If success <> True Then
    Log(imap.LastErrorText)
    Return
End If


Log("O365 OAuth authentication is successful.")

'  Do something...
success = imap.SelectMailbox("Inbox")
If success <> True Then
    Log(imap.LastErrorText)
    Return
End If


'  Your application can continue to do other things in the IMAP session....

'  When finished, logout and close the connection.
success = imap.Logout
success = imap.Disconnect

Log("Finished.")