Duplicate Message Filtering

akalsey -

Duplicate messages sent within one minute will be blocked by Tropo, for both long codes and short codes. A "duplicate message" is defined as the same to, from and message. Carriers also filter out repeated messages that arrive too close together.

If you need to send the same message repeatedly (as you might often do during testing), add a small unique string to your message, to prevent it from being a duplicate.

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