Generally, it is not possible to send altcoin without a fee. Because the altcoin system works based on Block Chain Technology. Some mining fees are required to send altcoin. So there is a fee to be sent to send the altcoin to the wallet address.
But altcoin can be sent without fees but it is not in wallet address. Altcoin can be sent through personal email without the fees. It's actually done to send the altcoin internally. In that case, the sender and the recipient need to have the same wallet. If not the same wallet, then altcoin cannot be sent. This is the only way to send altcoin without the fee. If you have any other idea kindly share with us. Thank you
If you can sending altcoin without fee, it will be bad, seriously.
There will be many spammers broadcasting their tx to send altcoins to multiple addresses endlessly.
This will causing the network to congested, and your tx maybe stuck forever.
At least it will be good if using only small fee, so the spammers will run out of coin if they want to try spamming.