SX_INTERNET_ADDRESS_TO_NORMAL fonksiyonu ile eposta adresinin geçerliliği kontrol edilebilir.
Kullanımı :

form f_validate_email using     prm_ad_smtpadr type ad_smtpadr
                      CHANGING chn_ok type c.
  types: sx_addr_type  type sx_addrtyp, "R/3 Addresstype
        sx_addr       type so_rec_ext . "Address in plain string

  types: begin of sx_address,           "SAPconnect general addr
         type        type sx_addr_type,
         address     type sx_addr,
       end of sx_address.

  constants: cx_t_int    type sx_addr_type value `INT`.  "SMTP address

  data: ls_addr_unst      type sx_address.
  data: ls_addr           type sx_address.
  data: lv_address_normal type sx_address.
  data: lv_local          type sx_addr.
  data: lv_domain         type sx_addr.
  data: lv_comment        type sx_addr.

  ls_addr_unst-type    = cx_t_int.
  ls_addr_unst-address = prm_ad_smtpadr.
  clear chn_ok.

  call function `SX_INTERNET_ADDRESS_TO_NORMAL`
    exporting
      address_unstruct     = ls_addr_unst
    importing
      address_normal       = lv_address_normal
      local                = lv_local
      domain               = lv_domain
      comment              = lv_comment
      addr_normal_no_upper = ls_addr
    exceptions
      error_address_type   = 1
      error_address        = 2
      error_group_address  = 3
      others               = 4.
  if sy-subrc eq 0 .
    chn_ok = `X`.
  endif.


endform.                    "f_validate_email