2sms houses a 500+ message per second processing power.
While the number of destinations in a single send is unlimited, there are some practical constraints.
If you are using our web application the limit is 1,000 destinations in a group, but you can choose to send to multiple groups in one go.
If you are using a XML call, it is limited to 1,000 destinations per call, unless you send to pre-defined groups, where 30,000 is possible.
Please contact us at 1-877-276-7266 or +44 800 652 2277 for more information.