Friedrich Schmiedl used powder rockets to make regular rocket mail service between two Austrian towns from 1931 to 1933.

Start of official rocket-mail service between two Austrian towns by Friedrich Schmiedl; test flights began in February 1931, while rocket-mail service continued until March 16, 1933.

Manufacturer: Schmiedl.

June 1928 - Schmiedl attempts launch of balloon-lofted rockets. The first attempted launch of instrumented rockets from stratospheric balloons. These V1 and V2 rockets failed to ignite but Schmiedl's work anticipated the Van Allen Rockoon concept by twenty years.

1931 February 2 - First rocket-mail. Apogee: 1.00 km (0.60 mi). Schmiedl launches his V7 post rocket with 100 letters aboard from Schoeckel bei Graz to Sankt Radegund, a distance of two kilometres. The 880 cm long rocket descended as planned by parachute .

1931 September 9 - First rocket-mail service. Apogee: 2.50 km (1.50 mi). Schmiedl's Post Rocket R1, with 333 letters aboard, is launched 5 km from the top of the Hochtroetsch to the town of Semriach. A month later the first return service rocket is launched at night from Semriach to Hochtroetsch.

1933 March 16 - Final Schmiedl rocket mail service. Apogee: 2.50 km (1.50 mi). Schmiedl conducts his final rocket mail 'service' with 379 letters aboard his S1 two-stage rocket over a distance of 5 km at Graz between Sankt Martin and Grazer Feld.