Can i put a small parcel through a mail box

It depends on the size and shape of the parcel, as well as the size and type of mailbox. Here are some general guidelines:

Some things to keep in mind:

In summary, it's generally okay to send small parcels through a mailbox, but it's important to check the size and shape of the parcel and the size and type of mailbox to ensure it will fit and be handled properly.