You can receive or send mail either for all of your accounts at once or for specific account only.
After you run this command, a dialog for receiving and sending mail will open. If you are not connected to the Internet, a Window's® standard Internet connection dialog will appear.
A password is required to receive the mail from a POP3 server. If you have not saved it in the program, you will be prompted to enter it.
Received mail is moved to folder Received mail and the mail that was in the folder To send mail will be sent (if receive/send of mail for the specific identity has been carrying out).