You can set up a number of SMTP servers and select from the list of existing servers when creating schedules. This allows you to use a different SMTP server for each schedule should you wish. This is useful if you want the "From" name and email address to be different for different recipients.
Example: Reports and Alerts sent to customers come from the Customer Services Email Account; Alerts And Reports Relating to IT come from the IT Department's Account
As stated above, you can set this account to be a backup email server.