Runs from: Kanpur Central (CNB) to Ratlam Junction (RTM)
| Halt # | Station Name (Code) | Arrival | Departure | Halt Time | Distance | Day |
|---|---|---|---|---|---|---|
| 1 | Kanpur Central CNB | Source | 11:27 | - | 0 km | 1 |
| 2 | MGR Chennai Central MAS | 11:48 | 14:08 | 8 mins | 225 km | 1 |
| 3 | Balharshah Junction BPQ | 14:42 | 15:55 | 14 mins | 346 km | 1 |
| 4 | Ratlam Junction RTM | 15:02 | 17:49 | 4 mins | 448 km | 1 |
Train 21904, named the New Delhi - Dehradun Mail Mail Express, is a premium Mail Express operated by Indian Railways. It connects the key terminal stations of Kanpur Central (CNB) and Ratlam Junction (RTM), covering a total distance of 448 km during its journey.
This train runs on Mon, Tue, Wed, Thu, Fri, Sat, Sun. It features comfortable seating and sleeping options across multiple travel classes including 2A, 3A, SL, 2S. With a total of 4 scheduled stops along the route, passengers can check accurate station arrival/departure times, exact halt durations, and distance markers in the timetable above to plan their journeys efficiently.