I apologize for sending an email to the customer directly, because I forget to send you yesterday and scared that the customer is not prepared to send the money.
I apologize for sending e-mail to customers. Because I forgot to send you yesterday and the fear that the customer will not have the money to send our customers.
I'm sorry for sending email to customers directly. Because I forgot to send you yesterday and was afraid that the customer will get the money it is sent to the customer.