Jes80,

Good Morning! 

Great question, and I'd be happy to address it!  When you are messaging anyone in Canada, Mexico or Puerto Rico the standard domestic charges apply.  What does that mean for you? It means your standard plan will be used, in your case the unlimited messaging plan. You can use your messaging with no worries! 

For anyone else, if you have a messaging package with an allowance (250, 500, 5000), the messages to the above listed countries would come from your bucket of messages. Mobile to Mobile messaging does not apply. 

If you text to/from anyone outside the US, Canada, Mexico or Puerto Rico the messaging rate is $.25/per recipient per msg sent and $.20/msg received.