Invest in the only and already active messenger on a blockchain. Today is the most profitable condition. We accept ETH, BTC, BCH, DASH, DOGE, LTC, XMR, NEM, ETC, ZEC, WAVES, LSK, REP, GNO, ICN, MCO, ANT, CVC, EOS, DNT, OMG, DCR.
https://adamant.im/ico/ Or just download and run Bitmessage which has been around for years and doesn't cost you to send messages.