[Evolution] How to turn off "Sender has been........?

[grasshopper <marigold 6352 gmail com>]

Good afternoon,

I would like to deactivate the message: "Sender has been notified that
you have read this message".  Such a message is fine for private mail,
but it's irritating when I click on a message on one of the lists and I
just want to read the mail.

I have checked online, but have not found any information.

Thank you,

grasshopper


Evolution 3.4.4 on OpenSUSE 12.2