# SMS Capability

## Messaging Profile Overview:

A Messaging Profile serves as a pivotal component, delineating how an Opentact Phone Number can be utilized for SMS interactions. The association of a Phone Number with a Messaging Profile is a prerequisite for both sending and receiving SMS functionalities.

### Usage of Messaging Profile:

The Messaging Profile plays a dual role, primarily defining:

1. Callback URL: This specifies the callback URL through which an Opentact user can receive SMS messages sent to a Phone Number.
2. Grouping Phone Numbers: It groups multiple Phone Numbers linked to a Messaging Profile, facilitating streamlined use within the SMS Bulk Sending API. This eliminates the need to specify individual Sending Party IDs; instead, you can simply designate the Messaging Profile, and all numbers within that profile will be cycled and selected for SMS transmission.

### Associating Messaging Profile with a Phone Number:

Navigate to the My Number page to view all your numbers. From here, select a Messaging Profile for each Phone Number, establishing the desired SMS characteristics.

###  Inbound SMS Configuration:

For US and Canada phone numbers to receive SMS, SMS-enabling the number is mandatory. A nominal fee of 0.01 is associated with SMS-enabling a US or Canada Phone Number.

### Outbound SMS Procedure: 

To initiate outbound SMS for US and Canada numbers, start by creating a TRC Brand and TRC Campaign. Following this, assign phone numbers to a TCR campaign to enable SMS sending through the designated campaign. This structured approach ensures a systematic configuration for outbound SMS operations.


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