How do employers find a way to read your emails?

[flingebunt]

There is no legal way for them to read your personal emails in your personal email account or access your facebook account. It would be a breach of law.

However, legally you are using their equipment, on work time. So legally anything you do legally belongs to them.

They can use their email system to look at your emails. It is pretty straight forward and I have done this on occasion (when someone has problems with their email or computer)