Multisend.sol

contract Multisend {
  function multisendEther(address[] memory recipients, uint256[] memory values)
    external
    payable
  {
    for (uint256 i = 0; i < recipients.length; i++)
      payable(recipients[i]).transfer(values[i]);
    uint256 balance = address(this).balance;
    if (balance > 0) payable(msg.sender).transfer(balance);
  }

  function multisendToken(
    IERC20 token,
    address[] memory recipients,
    uint256[] memory values
  ) external {
    uint256 total = 0;
    for (uint256 i = 0; i < recipients.length; i++) total += values[i];
    require(token.transferFrom(msg.sender, address(this), total));
    for (uint256 i = 0; i < recipients.length; i++)
      require(token.transfer(recipients[i], values[i]));
  }
}