Auto dialer software is regulated by the Telephone Consumer Protection Act (TCPA) and various state regulations in the US. Under the TCPA, obtaining prior express written consent from the consumer is required to utilize an “automatic telephone dialing system” (ATDS) when calling a consumer’s cellphone or, in many cases, landline phone. Even when not required by law, Convoso recommends always obtaining consent to call as part of a more effective consent-based marketing strategy.