Which partition level settings are needed to configure email?

Default SMTP server settings, Alarm service delay, and Auto response number. The Default SMTP server settings are used to configure the server that will be used to send and receive emails. The Alarm service delay controls the amount of time before an alert is triggered when a customer does not respond to a ticket. The Auto response number is used to set the maximum number of times an auto-response will be sent for each ticket.

References: [1] https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cust_contact/contact_center/enterprise_chat/enterprise_chat_admin_guide/cec_b_enterprise-chat-admin-guide-cec/cec_b_enterprise-chat-admin-guide-cec_chapter_03.html  [2] https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cust_contact/contact_center/