who has once use this bapi,please up

'MC_SEND_MAIL' this bapi ,who has used it in the actual porject,i have some questions as follows:

1.the import parameter 'MS_MAIL_RECEIVER' 'MS_MAIL_DLINAME'

MOVE ZINTE-MAIL_ID TO MAIL_ID.

MOVE ZINTE-DISTR_LIST TO DISTR_LIST. ZINTE is the add on table,and i ask how the 'mail_id' and 'distr_list' are maintained,and by what it can associate with the email address.

just this,thks a lot!