Send e-mails without overloading the SMTP server. This option will come in handy if you require to blast large number of e-mails.

Option for removing e-mails from selected/all group(s) for people who are not interested in receiving your newsletter

At times you require your machine to automatically shut down once the emails are sent. Set this option and specify number of minutes after which the machine will be shut down.

This option will come handy when you require to send e-mails in the night.