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Do mobile users get charged when they send messages to Twilio US toll-free numbers?

Yes, they will be charged according to their mobile texting plan. Subscribers who pay a monthly charge for unlimited two-way texting will not be charged extra for texting to a toll-free number, but other subscribers may be charged per text sent or received.

Calls to toll free numbers, on the other hand, are always free for the callers.

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