ALV output with one field Editable and search f4

Hi Experts,

I have a requirement where alv output is displayed and in that one editable field is there, now my requirement is editable field is to enter a mail id for which the user will enter a valid mail id, but at the time of entering some string he should find the related mail ids which are stored in custom table and he can select that.

is this requirement can be possible ? if not then what is the possibel way to get it.

regards,

Raghava