Not receiving confirmation cc when is_read_receipt_requested = True

[michaelobr]

I am not receiving notification from my sender email when the recipient reads (opens up) the email message. I do receive notificaiton when it is delivered, but this too I am uncertain is accurate as it is received on sending the message, before I even receive the email on my testing receiving email. Code sample below.

account = Account(credentials)
msg = account.new_message()
msg.to.add('[email protected]')
msg.is_read_receipt_requested = True # this does not work and I don't receive any confirmation cc when the recipient reads (opens) the email.
msg.is_delivery_receipt_requested = True # I'm unsure if this works as well, because I receive it before I can even view the email on the receiving email account (i.e. [email protected])
msg.subject = "[TEST]"
msg.body = "testing read & delivery receipt" 
msg.send()

python-o365/O365/message.py

Line 616 in 8313e3d

cc('isReadReceiptRequested'): self.is_read_receipt_requested,

[alejcas]

I don't see any error in the code. Maybe it's something to do with microsoft graph? I don't know