Make Billboard Material visible through objects?

Hi all,

I have a blinking Billboard Material, which I would like to be visible through any object that stands between the player and the Billboard.
Here is a screenshot of the material:

I am aware that there are tutorials and other similar questions on Answerhub, but all of the solutions require the material to be set to either “translucent” or “post process”. The solutions cause the material to either no longer display the texture and only show white, or to lose the translucent area and make it opaque (the texture is a round balloon with an exclamation mark).

Anyone knows how to get around this?

Thanks!