Hi, it depends on the IT policy of the company and also on the content of the email with the attachment. Have you forwarded any confidential or secret information to your personal email ID? If so, there is a chance your employer may initiate disciplinary action. However, if the content of the email is normal, there likely won't be any issue, except perhaps a warning. Mostly, they won't force you to continue beyond the notice period, and they might even relieve you early if necessary.