Yes, you can save any campaign or flow message as a template!
For a campaign:
From the Campaigns tab navigate into the campaign you want to save as a template. If it's not an A/B test, click on the three dots on the far right side of the row of the campaign. Click the option that says Add to Email Templates.
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However, if the campaign was an A/B test, you will need to clone the campaign, edit the variation you want to save, and click on the edit drop-down to find the Save as template button.
For a flow:
In the Flows tab, navigate to the specific flow message you want to save. Then, click Edit to go to the template preview. Here, click on the edit drop-down and select Save as template.
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