Quote Originally Posted by MystikPiglit, post: 143995
Isn't that just for you to mark them for yourself?
It is yes

Quote Originally Posted by MystikPiglit, post: 144452
That's what I've been trying to find out.
Drumroll please.........................
before sending your pm, scroll down the page and you have an option to tick a few boxes. One of them is Request a read receipt for this message

So, this may not help you for a pm already sent Diane but, it will help in the future