The two things I can think of are the company may try to tag you for inappropriately handling what they consider confidential information – and if something goes to court and the email ends up in the discovery process, opposing council may be allowed access to your entire personal email account.
It’s probably better to copy everything as an attachment to a dedicated portable drive so it’s less likely to be called out by the company, and if it ends up it court you only need to release the information on that drive.
Weekly/monthly dump of the inbox to a personal cloud storage for later archiving
Except don’t do this if your company tells you not to(which they most likely have) as it will actually screw you over pretty badly. Unless you’ve got hard proof of illegality going on, don’t piss off your employer by being paranoid.
Don’t bcc your personal email, the internal mail servers can see everything even if the recipients don’t. Better to just screencap when possible.
The boss can’t see it unless he asks a tech for it. The techs usually don’t care.
So what if they know you have it?
The two things I can think of are the company may try to tag you for inappropriately handling what they consider confidential information – and if something goes to court and the email ends up in the discovery process, opposing council may be allowed access to your entire personal email account.
It’s probably better to copy everything as an attachment to a dedicated portable drive so it’s less likely to be called out by the company, and if it ends up it court you only need to release the information on that drive.
This would get you fired from some jobs.
Most companies have software to identify what you’ve copied to an external drive as well.
Download it, actually.
Weekly/monthly dump of the inbox to a personal cloud storage for later archiving
Except don’t do this if your company tells you not to(which they most likely have) as it will actually screw you over pretty badly. Unless you’ve got hard proof of illegality going on, don’t piss off your employer by being paranoid.