After you create a new campaign, use the Design tab to craft your message. You can include multimedia, personalization, and links to increase engagement. As you create the message, the preview screen on the right updates in real time. 
As you type your campaign message, the bottom-right corner of the message field displays your total character count and the number of messages you will be billed for. This includes:
- Automatically-appended opt-out language for AT&T subscribers
- Number of remaining characters before the campaign becomes two texts
Multimedia, including images and emojis, may affect this price.
Toll-free numbers: Opt-out language is required in each campaign message that you send to AT&T subscribers. We automatically add the {unsubscribe} personalization in each message for these subscribers. If you choose to customize the personalization, make sure your copy is clear for subscribers.
Create your campaign message
Follow the steps below to create your messaging and variations:
- Create a campaign.
- In the Message field, type your campaign copy. Click the following buttons to add media:
Media: Incorporate an image, GIF, native MP4 audio or video file, MP4 video preview link, or a virtual contact card in your message. 
Emoji: Add emojis to your content to increase engagement. Messages that contain emojis have a maximum character count of 70. Single emojis take up 2-4 characters. 
Links: A shortened URL to a website that can include Google Analytics tracking. You can use both normal and anchor links.
Personalization: Personalize the campaign with subscriber-specific details, such as their name, product information, or shipping information. 
Offers: Add a new or existing discount to your campaign message.
- If you are creating an A/B test campaign, enter a variation name. This is internal-facing only. Additional tabs are displayed above the message box for each variation. Click on the Variation tabs and repeat Step 2 for each variation.
- Preview your message on the right side of the page. When satisfied, click Save & continue.
After you have configured and designed your campaign, we recommend testing the campaign. When you are satisfied, send the campaign to your subscribers.
Test your campaign message
After you configure your campaign settings and display, we recommend sending yourself a test.
- On the Design page, navigate to the mobile device preview.
- Click Send text message. A popup appears.
- Enter one or more phone numbers to send the test campaign to. Alternatively, select Send text message to all company users to send it to your colleagues.
- Click Send text.
If you add personalization to your messages, the test message will not display the personalized fields. Instead, they will display the field name in brackets, as pictured below.