YOU SAID:

i sent an envelope full of plushies to my aunt

INTO JAPANESE

私は叔母にぬいぐるみでいっぱいの封筒を送った

BACK INTO ENGLISH

I sent my aunt an envelope full of stuffed animals.

INTO JAPANESE

私は叔母にぬいぐるみでいっぱいの封筒を送った。

BACK INTO ENGLISH

I sent my aunt an envelope full of stuffed animals.