Splice MAILBOX and BLUE BLOCK to make BLUE MAILBOX. You can find this item in furniture category. Have you ever watched the paint dry? It is faster than growing this tree. For basic breaking and levelling up. BLUE MAILBOX can be broken. You get at least 1 seed back (maybe more!) from splicing BLUE MAILBOX. Will you strike it rich? You just have to count the gems yourself. Massproducing BLUE MAILBOX can be tricky. You will find out after you have harvested a few.