There are many online wallets like Xapo and Coinbase that do not charge any transaction fees or they pay that fees by themselves. I want to know that how would they profit from paying for their user's transaction fees ?
If no fees is charged then the transaction take a much long time or even might get cancelled !
Maybe they have some kind of agreement or MOU with companies like blockchain. For xapo I think they get benefit from advertising and Coinbase they get benefit from exchange fees. thank you