Re: Email at scale is easy
There's a difference about how USA and USSR used German technology. USA brought in the people and let them improve their technologies and designs. USA didn't need much the machinery because its own one was already comparable, while Russian wasn't.
The Lockheed P-80 flown in 1944, before the Me-262 was available to be studied. Of course, all Allies inspected German technology carefully and learned a lot - but the best jet engine after the world came from the UK. The MiG-15 too used one, after IIRC Attlee clumsy sent blueprints to Stalin in a "goodwill" effort - just to find them on the enemy side in Korea.
USSR brought in the people who couldn't or didn't want to escape to the West, and also all the machinery and tools it could put it hands on. There were also frictions when USAAF wanted to bomb German factories in what would have become the USSR occupation zone because they already planned to loot them of everything as soon as possible. They basically "moved" whole German factories to the USSR territory.
While military technology was greatly pushed in the USSR - for obvious reasons, and with some successes - albeit even their space program suffered from the lack of some more advanced technologies (i.e. LOX engines for upper stages) -, it was the civil one that wasn't.
They kept on using old machinery and designs - as it happened, for example, for cameras - or got the rights for some old ones later - i.e. when in Togliattigrad after an agreement with FIAT they started to produce models which were already outdated in Italy, like the FIAT 124 (as the Lada-Vaz Žiguli), and kept them in production well into the 2000s... the state of civil technology before foreign good could be freely imported, was abysmal.
I don't underestimate other people and countries, yet I know history and often had first hand experience of some of them. For example when I went from Bucharest to Constanța on a Dacia 1300, a late licensed copy of the Renault 12....