Very unique take on the theme. The mood was easily the best part of this one, I loved the dialogue and the twist towards the end - the humor was also good without disrupting the atmosphere (got a laugh out of me when it wasn't having any of my invalid inputs).
Most of all, I think it's an idea that has a lot of potential - the gameplay is pretty barebones which I think is perfectly fine for the purposes of a Ludum Dare entry, it's just interesting to think about how the "recovering emails" concept could be turned into a bigger puzzle/point-and-click kind of game.
My only complaint is that copying/pasting the broken messages over and over is pretty repetitive, though I suppose it helps reinforce the "sifting through emails" feeling. Very cool idea overall, never thought of doing a game with React before.