In the Advanced tab, you may specify various advanced settings such as:

• Setting the Server Timeouts
• Specify and schedule your mailbox checking and specify how many messages retrieved each time
• Specify which mailing list to have automated subscribe and unsubscribe enabled, you can also set to delete message automatically from mail server after subscribe and unsubscribe has been performed
• Specify idle time for sending messages, some ISP have automatic system to block your messages if you sending to many, you can use this feature to get around it by setting and idle time (in seconds) and after how many messages this idle time will be triggered.