Eswap is an efficient tool to send invoices, pay bills or receive payments in just few clicks! I really like that you can create several transactions at once with different payment methods (credit card/bank transfer) for each of them so it's super easy when sending multiple billings from one invoice. It also makes very clear who has paid what by showing all related bank accounts as soon as they are updated through swapper api calls - this helps me keep track my expenses better than using excel sheets ever did before!! The best thing about eswamp though? Is how quick everything takes place after clicking "Pay". You have instant access to your funds without having any other step between creating transaction & receiving money back into account.