Suggested reading: Create a WhatsApp Business Template on InOne
Single message helps you send your users one-time and predefined messages to inform them about the latest promotions, offers, and discounts. You can also segment your users based on engagement to receive more clicks and earn more revenue accordingly.
The Single message enables you to:
Send promotional messages, special offers, and discounts.
Update your users about the latest developments.
Send messages to the subscribers list with the help of Saved Segments.
Creating a WhatsApp Message campaign starts with template creation. After WhatsApp approves your templates, you can refer to the steps below to start creating your WhatsApp Single message campaign.
In this article, you can find answers to the following questions:
Create a Single WhatsApp message
1. Navigate to Experience > Message > WhatsApp.
2. On the listing page of WhatsApp, click the Create button to start. .png)
3. Name your campaign, choose the campaign type as Single, and click the Create button. 
Segment your audience
In the Segments step, select your Subscriber Language to create your content accordingly. Select “All Languages” if you do not want to segment your users by language.
Create a Segment group to target the relevant audience. You can use the following segmentation options: Predefined Segments, Standard Segments, Predictive Segments, and Saved Segments. Click Save and Continue.
Design your Single WhatsApp message
In the Design step, you can only use the pre-approved templates you have applied for. While creating your templates, you can use media, which are images, videos and documents, variables, emojis, and action buttons.
Using variables and emojis in templates is highly recommended since they help you make your content more friendly and, therefore, more personalized.
The media are useful for drawing users' attention. They can be personalized according to their attributes.
Using buttons will help you engage with your users and target them more efficiently. For example, you can offer a discount coupon in the second message after the user chooses the positive reply in the first message.
1. In the Design step of your campaign, select the pre-approved template that you want to use for your campaign in the dropdown list. The most recent 10 templates are displayed by default in this dropdown list. You can also type the template's name and search for the template in the search field.
If you want to create a Carousel campaign, you should select the relevant pre-approved Carousel template.
2. In the Template Elements field, you will see the video, document, or image headers if you have uploaded them when creating your template. You can click the Change button to update and check the media in the preview.
If your template has a video element, upload a video in MP4 format, no larger than 16 MB.
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Changing a file’s extension to .mp4 does not convert it into an MP4 format. The video must be originally encoded in MP4; otherwise, it might fail the format check and result in an error. If your video is in a different format or exceeds the size limit, you must convert or resize it before uploading.
If your template has a document element, upload it in PDF format, no larger than 20 MB.
If your template has an image element, upload an image with a 1.91:1 aspect ratio in JPG or PNG format. The image must not be larger than 1024x1024 pixels and 5 MB.
In the Image Type field, you can select two image options:
- Custom Image enables you to upload a specific image to the message. The same image will be sent to all recipients.
- Dynamic Image enables you to add a personalized image to the message. The image will be differentiated according to the attribute chosen, such as Last Abandoned Product Image or Last Visited Product Image.
3. If you use the Call to Action (CTA) buttons in your message, you can change the website link to the dynamic ones, allowing for personalized buttons. 
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After the template is approved, the phone number in the CTA buttons cannot be changed. For additional information about the CTA template, refer to Track Links in WhatsApp Campaigns.
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To structure your URL correctly, avoid using invalid characters like commas (,) or exclamation marks (!). If included, they must be encoded to prevent errors.
4. Select the attributes you want to use as the variables to make the message more personalized if the template has them.
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Using dynamic attributes helps you personalize the message content, which can increase the click-through rate (CTR).
5. If your template has quick reply buttons, you can create response messages. 
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The response messages don't have to be pre-approved, as the end-users already engage with the brand when they click the quick reply button.
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If your campaign has become 'passive,' reply messages will not be sent when the end user clicks the quick reply buttons.
6. Under the Response Option, create an auto-reply message that consists of a text, image, video, or document for your users who respond with this option to your message. Your message can include text, image (dynamic or custom), video, document, link, emoji, and dynamic content so that you can make it personalized. 
Response to Other Reply is to create an auto-reply if the user does not select any buttons and does not take action on the message. You can personalize it with text, links, emojis, and dynamic content. 
If you use the Conversational API, the Response to Other Reply and Unexpected Messages (auto-reply) options won’t be available. All incoming messages are automatically routed to your chatbot flow.
Insider recommends you use this "Other" option to redirect your users to a support channel.
If you want the response to come from a third-party chatbot when the user clicks on the button, you should select the External Platform Response button. You can set the response on the third-party chatbot platform that you use. Refer to the Third-party Chatbot Connection to WhatsApp to use an external platform.
You can also shorten URLs in your messages to avoid long links.
You can enable UTM Parameters to track your campaign's performance on Google Analytics by assigning tags to your message links.
You can also check what your message looks like under the Preview area. You can also see it with responses for the templates with quick reply buttons.
When you finish your design, click Save and Continue.
Set your goals
In the Goals step, you can set goals to track the performance of your campaign and strategize it accordingly. Purchases come as the primary goal by default. You can change it based on your needs.
You can also set the Goal Conversion Duration. It is the time interval that starts after a user clicks a campaign for the first time. During that time interval you set, when your goal is achieved, the campaign will be logged as conversion. Click Save and Continue to proceed.
Refer to Attribution Methods Across Inone for more details on WhatsApp attribution.
Launch your Single WhatsApp message
When you finalize the configuration of your campaign, you can make it ready to go in the Launch step.
You can send your message immediately or later at a specific time or save your design as a draft and continue configuring it later.
You can assign or create tags for your campaign to reach it later easily. You can add up to 6 tags to a campaign and filter them according to their tags.
Under Frequency Capping, you can override the limit of messages that the users can receive within a specified period, which is assigned in Global Frequency Capping settings.
You can keep your notes in the designated area as well.
On the right side of the screen, you will see an information area that displays the total number of recipients and indicates if everything is set to send your message.
When you finalize all your configurations and your campaign is ready, we highly suggest you test your campaign before launching it. After ensuring that everything goes as expected, click the Launch button to start it.