I have no idea if it shows in your inbox if I'm actually watching you, but well, in case it doesn't (and if it did, I'm really sorry for the spam), I finally decided to put all the works I collaborated in in distinct folders, both in my gallery and my favourites (which are a horrible mess, but oh well).

So from now on, when I'll submit a collaboration work, it'll show in the Collaborations folder in my gallery.
And when the collab will be submitted by someone else than me, it'll go in the Collabs folder in my favourites.
This applies for any kind of work I would take part in (fractals and drawings atm).

Thought it would be more convenient to keep an eye on my works this way, feel free to take a look at both the folders, for their content is slightly different.

If you are a collaborator and I forgot to put some of our works into any of these folders, feel free to tell me, my memory horribly sucks. :/