Using SMS with Notify You can send and receive SMS messages using Notify. You can send SMS messages using the Notify API sendSMS method, or using the send SMS workflow activity. Inbound and outbound SMS messages are stored on the Notify Messages [notify_message] table. Notify supports sending concatenated SMS messages. Messages that exceed 160 characters, or 70 unicode characters, are split into multiple messages. This may affect your total telephony cost as each message can incur a cost. Some mobile carries, such as Sprint, do not support concatenated SMS messages.