Why are my mobile text message (SMS) charges higher than expected from Amazon SNS and Amazon Pinpoint?

Last updated: 2022-01-24

I was charged more than I expected for mobile text messaging (SMS) through Amazon Simple Notification Service (Amazon SNS) and Amazon Pinpoint. Why are my SMS charges higher than expected? Also, what's the best way to calculate my required SMS spending quota for Amazon SNS and Amazon Pinpoint?

Resolution

Amazon SNS and Amazon Pinpoint SMS charges can be higher than expected if messages exceed the message parts per second (MPS) limits.

For more information, see SMS character limits in Amazon Pinpoint. Also, Publishing to a mobile phone in the Amazon SNS Developer Guide.

To calculate your required SMS spending quota for Amazon SNS and Amazon Pinpoint

Follow the instructions in the Calculate your required SMS spending quota section of the following article: How do I request a spending limit increase for SMS messages in Amazon SNS?

Note: For Amazon SNS, you can subscribe to daily SMS usage reports to monitor your SMS deliveries. For Amazon Pinpoint, you can activate event streams to Amazon Kinesis to monitor your SMS deliveries. For more information, see SMS events in the Amazon Pinpoint Developer Guide.


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