posted this on November 01, 2012 16:26
Beginning in November 2012, you will now see Newsletter Usage Charges on your monthly invoices. This only applies to Silver+ level customers who are using the online Newsletter App or the Newsletter API. Newsletter usage is charged at a rate of $0.25 per thousand messages sent. Your November invoice includes charges for Newsletter usage during the month of October.
Please contact SendGrid Billing if you have any questions or concerns.