# Create an SMS Campaign

An Engage Studio SMS campaign sends a promotional message to a Parent Segment and Target Segment. Use this page when your sender and audience are ready and you want to create a One-off Campaign or Always-on Campaign.

## Before You Start

Complete [Set Up SMS Sending](/ja/products/marketing-cloud/engage-studio/channels/sms/set-up-sms-sending) first. You also need:

- A phone-number column in [E.164 format](https://help.twilio.com/articles/1260803420489).
- Consent and opt-out filtering in the audience or activation.
- A campaign send window that matches the audience's jurisdiction.


## Create the Campaign

1. Select **Create Campaign**.
2. Select **SMS** as the channel.
3. Enter a campaign name.
4. Select **Create**.


Engage Studio campaign list with SMS campaign entries
Engage Studio Create Campaign dialog with SMS selected
## Choose the Target Audience

1. Choose a **Parent Segment**.
2. Choose a **Target Segment**.
3. Select **Next**.


Engage Studio Target Audience step with Parent Segment and Target Segment selectors
Opted-out recipients are not automatically excluded from the audience. Confirm that the Parent Segment or activation excludes them before you launch the campaign.

## Compose the Message

1. Enter the message body.
2. Review the sender and live segment count.
3. Add Liquid variables when you need profile personalization.
4. Confirm that each Liquid variable has a corresponding output mapping.


Engage Studio SMS message editor with message body and mobile preview
For example:

```text
Hi {{ profile.first_name }}, your offer is ready.
```

For character encoding, segment counts, and mapping requirements, see [SMS Message Requirements and Limits](/ja/products/marketing-cloud/engage-studio/channels/sms/sms-message-requirements).

## Configure the Delivery Window

Configure the campaign's allowed delivery time before you schedule or launch it. The send window applies uniformly to every recipient in the audience; Engage Studio does not resolve a different window for each recipient. See [Configure SMS Delivery Windows](/ja/products/marketing-cloud/engage-studio/channels/sms/configure-sms-delivery-windows).

Engage Studio SMS Allowed Delivery Time settings with timezone and send window fields
## Configure the Activation

Select the activation used for delivery. The activation details can include:

| Field | Description |
|  --- | --- |
| Activation Name | System-generated identifier for the activation |
| Enable Activation Actions | Controls whether Activation Actions are used for delivery |
| Authentication | Engage connector used for delivery logging |
| Batch Size | Records processed per batch; the default and maximum is 1,000 |
| Thread Count | Parallel send threads; the default is 1 and the maximum is 10 |


Engage Studio SMS Activation Details with authentication, batch size, and thread count
Map the audience columns used by the delivery pipeline:

- `phone_number` is required and must contain a phone number in [E.164 format](https://help.twilio.com/articles/1260803420489).
- Every profile column referenced in the message, such as `first_name` or `loyalty_points`, must have an output mapping.


Engage Studio SMS Output Column Mapping with audience attributes and Liquid mapping
## Schedule and Launch

1. Select **Send immediately** to send when you launch the campaign, or select **Schedule for later** and choose a future date and time.
2. Review the audience, message, send window, and activation.
3. Select the launch action for the campaign.


Use [View SMS Delivery Events](/ja/products/marketing-cloud/engage-studio/channels/sms/view-sms-delivery-events) to verify the resulting delivery statuses.

## Related Pages

- [Add UTM Tracking to SMS Campaigns](/ja/products/marketing-cloud/engage-studio/channels/sms/add-utm-tracking-to-sms-campaigns)
- [Shorten Links in SMS Campaigns](/ja/products/marketing-cloud/engage-studio/channels/sms/shorten-links-in-sms-campaigns)
- [Troubleshoot SMS Delivery](/ja/products/marketing-cloud/engage-studio/channels/sms/troubleshoot-sms-delivery)