Prompt.io calculates your bill based on usage. Usage is determined in what is known as UTC time -- Coordinated Universal Time, also known as Greenwich Mean Time (GMT). UTC is 7 hours ahead of U.S. Pacific Standard Time and 8 hours ahead of U.S. Pacific Daylight Savings Time.
A typical plan will include charges for SMS. For most plans, an SMS charge will be made for messages that are 1-2 segments in length. Excess segments will incur a separate fee. MMS messages are simply charged the negotiated MMS rate -- no separate or excess segment fees are charged. Rates will vary for inbound and outbound traffic.
Other charges that may appear on your bill include:
Campaign Registry Fees
Campaign Verify Fees
Network Access Fees
If you have questions about your bill, please contact Customer Success for more details.