From Commonwealth v. Amaral, 78 Mass. App. Ct. 671 (2011):
The actions of the defendant himself served to authenticate the e-mails. One e-mail indicated that Jeremy would be at a certain place at a certain time and the defendant appeared at that place and time. In other e-mails, Jeremy provided his telephone number and photograph. ...
From Commonwealth v. Amaral, 78 Mass. App. Ct. 671 (2011):
The actions of the defendant himself served to authenticate the e-mails. One e-mail indicated that Jeremy would be at a certain place at a certain time and the defendant appeared…