The South Waterfront’s Postal Annex on SW Corbett & Boundary provides the South Portland Business Association & its neighbors with all the postal services they could need: shipping, packing, mailbox rental, and much more. In addition to selling packing & mailing supplies like stamps & envelopes, the Postal Annex’s friendly staff also offer copy, fax, and notary public services, along with greeting cards, gifts, and office supplies. With the Postal Annex, it’s like having your own personal assistant!