Anonymous, a group sympathetic to WikiLeaks, say the documents relate to the issue of whether BoA has improperly foreclosed on homes.
However, the emails do not appear to be as damning as the hackers hope, with little evidence backing up the claims that BoA foreclosed homes without proper documentation.
The emails involve a discussion between employees of BoA subsidiary Balboa Insurance regarding removing documents from loan files for a group of insured properties.
There was some indication that material pointed to in the emails had been recently removed, with many links leading to blank pages.
A BoA spokesman said the documents were stolen by a former Balboa Insurance employee, and were not related to foreclosures.