The great speed of the courier services seems to be instrumental in the expansion of the courier service in Sikkim. Therefore, in spite of the prevalence of the postal services in Sikkim, the courier service of Sikkim helps the inhabitants of Sikkim to receive and deliver mails. Now-a-days, the people of Sikkim depend more on the courier services for the delivery of parcels and other such stuffs due to the speed and specialization of the courier services.
The helpline numbers of some of the important courier service at Sikkim are:
| Courier services | Helpline numbers |
|---|---|
| Elbee. | 229150. |
| Jayshree. | 223417. |
| DTDC. | 228652, 228653 |
| Overnight Express. | 223813. |
| Blue Dart. | 231374. |
| First Flight Couriers Limited. | 222376. |


