After a few minutes of researching, exmo looks to be a legitimate cryptocurrency exchange, as it's also listed on reputable sites like coinmarketcap and bitcoin.com, though I can't say if it's a good exchange or not. Exmo in my opinion has a decent modern user interface, but for some reason
Exmo's exchange section isn't loading well for me, as it took like 30 or more seconds before I could choose what cryptocurrency pairs I want to exchange.
Though Exmo looks like a legitimate exchange site to me, I'll currently stick to more reputable exchange sites like Bitfinex and Bittrex instead.