Is there a limit to the number of texts I can send in one day?

The maximum number of texts will vary between providers. 

Minimize the number of messages per day. Too many messages will not only annoy customers but may trigger a carrier to block your sending phone number permanently. Jackrabbit will alert you when you’ve sent 500 cumulative texts in a 1 day period. 

Refer to Texting in Jackrabbit - An Overview for more text message guidelines.