That is, from two different email servers. Read receipts in all email systems are under the control of the account user, or the account admin if it is a. If you dont control the account, then talk to whomever does administer it. If you control the account, login to your account and check the settings there. I upgraded my Outlook on my Macbook Pro to version 15.36.1 (170721) but there was no sign of the desired feature in my Outlook. That would have to be due to a setting on your email account, on the server side.
The reason why I am doubtful that it is working, is because I sent myself three messages from one of my email addresses to another one of my email address. I was one of many Outlook users who recommended that the 'read receipt' function available on my laptop Windows environment that it was to be made available to all MAC users.
In addition, I am wondering if that same command can be run for three different email addresses, or if it is just restricted to one address. To be honest, I am not sure if it is working or not, because while I did get the error message which they mention - that is, 'The domain/default pair of (, UserHeaders) does not exist,' - and then followed what they said to do after that, in the Terminal feedback, I am getting nothing like ' ,'. I just tried to follow the same instructions for requesting receipts, which I assume you probably found at LiveWire, or at some other site which copied the instructions from LiveWire.
