What is the ruling on transferring money to a person in the local currency via local applications, for him to then transfer it to a friend in another country via international mail, and does this negate the condition of immediate possession (taqabud)?

It is permissible to transfer money in the local currency to someone in your country via the application, for them to receive it instantly. It is also permissible for this person to transfer money to your friend in another country in that country's currency. The delay in the money's arrival or reception does not affect its permissibility. This process involves currency exchange and transfer. The constructive possession occurs through the banking entry of the amount, and receiving the transfer receipt is considered constructive possession.