Someone reading email
It totally depends on the company that they want to know the employee information what the employee are doing or something else. But "Yes" if they want to know then surely they can know the email which you send via hotmail or yahoo mail.
Hotmail and yahoo mail or gmail you can use those email provider to send email with using their web interface or as well as using the email clients like thunderbird or outlook.
Most of the company using email clients in place of web interface to manage the email accounts. But it doesn't take any difference if they want to know the information of email which have been sent by their company.
Here are some of the option which they can use to get the information about email which send by their employee.
- They can use the tool which can suport sniffing, Now a days Lan sniffers can be available very easily.
- Your company can use LogMeIn to get the remote assitance on the network of company so the administrator can know what you are sending on emails.
- They can use TeamViewer like software which can able you to view the desktop of the other computer.
Those are some of the techniques which someone or your company can use to see what you are doing from their computer, So it is better to use the computer of the company for just the official work.