This is maybe not the answer you’re looking for but I find Loon’s tools useful.
In send_asset.html change var transfee = 0.0001 to var transfee = 0.00001.
This reduces the fee by a factor of 10x (to about 0.3 cents per send.
For sending to multiple addresses, you’ll need to make one transaction per receiver. If you know some programming you can try to add an iteratetion to Loon’s functions. It may work, though I’ve never tried.