Not included. If you need these, it is recommended to build a separate mail gateway and anti-virus server, which are rarely deployed on the firewall. Anti-spam is mainly the management and control of application layer. To be honest, Cisco is not strong in this respect, and ASA-based anti-virus and email gateways are even weaker. Cisco has a separate mail gateway ironport.
You can add IP. However, when you have business that is open to the public network, ips is appropriate. For example, you have an external website and an external business platform. If it's just a mail server, this demand seems a bit reluctant.