[Mailman-Users] HTML code is not recognized ?

Pardon my English. I' m Italian. I need to use some mailing list in my site. I need to insert in the messages sended by the mailing list to the users some element in HTML (banner or link for example) such as msg_header or msg_footer . I have found in CPanel the mailing list MailMan and i have

[Mailman-Users] What is the SETTING to insert HTML code in Footerand Header ?

Help me please. In MailMan mailing list... What is the setting to put HTML code in footer and header of the mailman list ??? I use MailMan Mailing List of CPanel and HTML CODE IS NOT RECOGNIZED. I read all in pure text. If i insert HTML code such as footer or header it result in a error. I read