Technically with myCRMSIM you can setup and run cold sms outreach but we cannot advise if you should or should not do that as you should abide by whatever the rules and regulations are for cold sms within your state/country and as per our Terms Of Service.
If you do run cold SMS outreach campaigns please ensure that you utilise our snapshot to ensure that if people do respond STOP that you remove them from further SMS followups.
Any mass sms campaigns must be run in drip mode with maximum of 1 sms per minute or you risk getting your account blocked by the carriers.