How do I send a one-time SMS campaign without building a journey?

First connect your SMS provider in Settings → Configure Platforms → SMS. Then:

1. Go to Campaigns → One-time messages and click Send message > SMS.
2. Content: choose an SMS preset (required, the text comes from it) or click Create new. Select the message type:
3. Marketing message respects frequency capping and isn't sent to control group users.
4. Transactional message goes to all users regardless of subscription status and bypasses frequency capping.
5. Audience: choose Send to segment, Send to a list of phone numbers (numbers not yet in your project are registered as SMS devices), or Send to all subscribers.
6. Schedule: Send immediately or Selected time, with Subscriber's device timezone or Custom timezone. You can also set frequency capping and send rate here.
7. Review: check the preview, click Schedule or Send Now, optionally edit the Campaign name, and confirm.

To change a scheduled SMS that hasn't been sent yet (status PENDING), open Campaigns → One-time messages, click the actions menu (⋮), and choose:

• Edit message to update content, audience, schedule, and delivery settings, then click Apply changes.
• Rename to change only the campaign name.
• Delete message to cancel the send (status Canceled).

Learn more: Send one-time SMS