If you exceed your allotted messages we demand that you hand over to us your first born child!!! Well, that's a little extreme.  You will incur overages though:

Overages vary by message type, each of which is explained below:

Email - Email overages are calculated at $.005 per message sent over the allotted plan level. So, for example, if you send 1000 messages over your plan, your overage charge would be $5.00.

SMS - SMS message overages are $.10 per message over the allotted plan limit. So, for example, if your total overages equal 1000 SMS messages over your plan, your overage charge would be $10.00.

Voice - Voice message overages are $.10 per 30 second call. If the call is longer than 30 seconds, then an additional $.10 per 30 seconds over will be applied. For example, if you sent 1000 sixty second calls over your plan, your overages would be $20.00 - ($.10 x 2 x 1000)

Fax - Fax overages are $.10 per fax sent over the plan maximum for domestic numbers only. International faxes incur a greater per message overage based on country rate selected.