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 !
they have profits from ads, if a lot of peoples are using it means that a lot of peoples see that ads and they earn good profit from that