In Your Letter by REO Speedwagon first appeared on the Israeli foreign-music chart on 9 Nov 1981, entering at #29. It peaked at #10 on 7 Dec 1981. In total it spent 9 weeks on the chart, last charting on 4 Jan 1982.
| Wk | Date | Pos |
|---|---|---|
| 1 | 9 Nov 1981 | 29 |
| 2 | 16 Nov 1981 | 24 |
| 3 | 23 Nov 1981 | 19 |
| 4 | 30 Nov 1981 | 12 |
| 5 | 7 Dec 1981 | 10 |
| 6 | 14 Dec 1981 | 14 |
| 7 | 21 Dec 1981 | 20 |
| 8 | 28 Dec 1981 | 27 |
| 9 | 4 Jan 1982 | 38 |