Make sure you are on the Advanced menu
Max Emails Per 24 Hours: This indicates how many emails can be sent out within a 24 hour period. Email providers may have a limit on how many emails you can send out per day.
Max Emails per Hours: This indicates how many emails can be sent out within an hour period. Email providers may have a limit on how many emails you can send out per hour.
Limit Applies to Word Processor Letters only: This option specifies whether you want the above limits to only apply to Word Processor Emails or not.
Days To Keep Sent Emails: This specifies how many days sent emails will be kept to be viewed or interacted with by the Liberty Email Manager.
Days To Keep Unsent Emails: This specifies how many days unsent emails will be kept to be viewed or interacted with by the Liberty Email Manager.
Emails Per Connection: This specifies how many emails can be sent out per authenticated connection. Some email providers have a limit on how many emails you can send out per connection, this is set to 10 by default.
Click the OK button when finished.