How to get conversation links adressed to me with a subject

[XD]

I've seen these things where you click on their thread design and poof there is a PM with their name filled in under participants and a pre-defined subject. How can I do this?

 

[Jerry]

put http://www.mc-market.org/conversations/add?to=Smocks as the link you're redirected from when you click the image

idk about subject tho

 

[XD]

put http://www.mc-market.org/conversations/add?to=Smocks as the link you're redirected from when you click the image

idk about subject tho

The name works, still need the subject :/[DOUBLEPOST=1508006723][/DOUBLEPOST]

put http://www.mc-market.org/conversations/add?to=Smocks as the link you're redirected from when you click the image

idk about subject tho

Aha it's :

http://www.mc-market.org/conversations/add?to=Smocks&title=Test