Mail options -- For my future reference

- Priority Mail, flat fee, whatever you can fit in the cardboard envelope: 4.95 (I remember when it was 2.00-something :] )
- Documents don't get insured (with Priority Mail, at least), only merchandise; they can go via registered mail, which is slower and gets signed at every step, but secure
- Priority Mail doesn't have tracking, but you can get a delivery confirmation and/or return receipt
- No clear tape for sealing registered mail: they provide paper tape and water :)