Sounds a lot like the once-popular emails from a prince in exile from a certain African country who would share his huge heritage with you as soon as you transferred him some cash for administration costs.
On a serious note, if there's no mention of an airline anywhere on the web, what's the chance of it being an existing, legitimate carrier? I say extremely low. Unless it's some small owner operation established to serve someone rich and his immediate family only, there isn't any chance that an airline doesn't become known to the wide public well before its first actual flight. There's usually some public info even about startups which are yet to obtain their AOC, let alone about established companies.