From Manuel v. State, 2011 Tex. App. LEXIS 7152 (Tex. Ct. App. Aug. 31, 2011):
An e-mail is properly authenticated if its appearance, contents, substance, or other distinctive characteristics, taken in conjunction with circumstances, support a finding that the document is what its proponent claims. See Shea, 167 S.W.3d at 105; Massimo v. ...
From Manuel v. State, 2011 Tex. App. LEXIS 7152 (Tex. Ct. App. Aug. 31, 2011):
An e-mail is properly authenticated if its appearance, contents, substance, or other distinctive characteristics, taken in conjunction with circumstances, support a finding that the document…