Just added the ability to instantly send cryptocurrencies to other users of the platform with zero fees (for free), because the transfer is executed off-chain, only in platform's database. You must know the user ID of the recipient of the coins (which can be found in My account -> Settings)

I'm now working on sending coins using email, which would work like this: you select the coin, you type the amount and the email address, and the platform sends an email to the user saying they have received some coins. The user can then create an account or login to their existing account and claim the coins. If the coins are unclaimed after a certain amount of time, they are returned to the user who send them.
This service will also be free.

If this sounds interesting, please take a look: https://sandbox.aplusdelta.com/