Biennial orange mail

I think there may be a bit of confusion here!

"Biennial" refers to a plant that completes its life cycle in two years, producing flowers and seeds every other year.

"Orange" is a color, often associated with the fruit of the same name.

"Mail" is a term that refers to postal services, such as sending letters or packages.

So, I'm not sure what "biennial orange mail" would be, as it doesn't seem to make sense in the context of any of these words. Could you please provide more information or clarify what you mean by this phrase?