According to the
Somerville Times, a Malden postal worker was found to have thousands of pieces of mail in his apartment belonging to people from Somerville, Medford, Malden, and Melrose. USPS will be delivering the unopened mail, but much of it was opened so they don't know who the intended recipients were. If you think your mail is missing, you should contact the USPS at their contact info bolded in the article below.
( Full text of the article under the cut. )