If you want to do this or you just want to try you need to create a new wallet for the test. Sent the total amount to the test wallet, If you want to send like for example $100 for 10 ETH address you need to send $1000 + $10-$20 for a Gas fee or transaction fee. so all of it equals to 1020 and convert it to ETH. Like for example $1020 to ETH = 6.29 ETH so that's the amount you need to send to the test wallet. Note: this is just an example in case you might want to send a small amount you can understand how it goes.
1. First, make a list of the addresses that you will send the amount to, you need them to be separated on a comma, use a tool such as
https://delim.co/# to separate them smoothly as you can see on the picture.
2. After that go to
https://www.vintage.myetherwallet.com/#contractsPut in this contract address: 0x7bD9084fDd5D021C226918d86C0721CB088B9B4A
Paste the below into the ABI section:
[{"constant":false,"inputs":[{"name":"_token","type":"address"},{"name":"addresses","type":"address[]"},{"name":"amount","type":"uint256"}],"name":"multiSend","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"addresses","type":"address[]"}],"name":"multiSendEth","outputs":[],"payable":true,"stateMutability":"payable","type":"function"}]
Press Access
3. choose multisendEth in the dropdown.
Paste the addresses on the “addresses” list. like this:
4. then click write, something like this would appear then put the total amount: $1000 to ETH = 6.17 ETH
That's how easy to send ETH to multiple addresses, don't forget to check the gas station to save the gas fee.
https://ethgasstation.info/In this case it is 6.17 ETH or $1000. Which will be split around equally between all 10 accounts or however many accounts you have.
If gas limit says -1 you did something wrong.
Double check everything then click to make the magic happen. Test it first with just a few addresses. I recommend not doing more than 50 at a time. I did 105 transactions in one go sending 20 cents to each address and it worked fine.
Source:
https://medium.com/@ICOProReivews/how-to-send-eth-to-multiple-wallets-c48c8a0d8343