When sending the mail

    DATA: ldf_mailsubject TYPE sodocchgi1.

  DATA: ldt_packing_list TYPE STANDARD TABLE OF sopcklsti1,
        lds_packing_list TYPE sopcklsti1.
  DATA: ldt_recipients   TYPE STANDARD TABLE OF somlreci1,
        lts_recipients   TYPE somlreci1. 

* populate email subject (document_data) structure
  ldf_mailsubject-obj_name     = gcf_mailsubject.
  ldf_mailsubject-obj_langu    = sy-langu.
  ldf_mailsubject-obj_descr    = prt_email_subject.
  ldf_mailsubject-sensitivty   = gcf_f.
  ldf_mailsubject-doc_size     = ( ldf_attach_cnt - 1 ) * 255 +
                                STRLEN( gdt_attachment ).

* email body
  lds_packing_list-transf_bin  = space.
  lds_packing_list-head_start  = 1.
  lds_packing_list-head_num    = 0.
  lds_packing_list-body_start  = 1.
  lds_packing_list-body_num    = ldf_body_cnt.
  lds_packing_list-doc_type    = gcf_raw.
  APPEND lds_packing_list TO ldt_packing_list.
  CLEAR  lds_packing_list.

* email attachment
  lds_packing_list-transf_bin  = gcf_x.
  lds_packing_list-head_start  = 1.
  lds_packing_list-head_num    = 1.
  lds_packing_list-body_start  = 1.
  lds_packing_list-body_num    = ldf_attach_cnt.
  lds_packing_list-doc_type    = gcf_xls.  "text file
  lds_packing_list-obj_name    = gcf_mailattach.
  lds_packing_list-obj_descr   = prt_attach_descr.
  lds_packing_list-doc_size    = lds_packing_list-body_num * 255.
  APPEND lds_packing_list TO ldt_packing_list.
  CLEAR  lds_packing_list.


* Call SAP Office function to send the email out
  CALL FUNCTION 'SO_NEW_DOCUMENT_ATT_SEND_API1'
    EXPORTING
      document_data              = ldf_mailsubject
      put_in_outbox              = ' '
    TABLES
      packing_list               = ldt_packing_list
      contents_bin               = gdt_attachment
      receivers                  = ldt_recipients
    EXCEPTIONS
      too_many_receivers         = 1
      document_not_sent          = 2
      document_type_not_exist    = 3
      operation_no_authorization = 4
      parameter_error            = 5
      x_error                    = 6
      enqueue_error              = 7
      OTHERS                     = 8.

  CASE sy-subrc.
    WHEN 0.
      COMMIT WORK.
* Push mail out from SAP outbox
      SUBMIT rsconn01 WITH mode = 'INT' AND RETURN.
      MESSAGE s000(zev0301) WITH text-m03. "Email successfully sent