I want to copy a template from a campaign/flow into another message, how can I save my message as a template?
You can save any campaign or flow message as a template. From the campaigns tab, if it's not an A/B test, click on the three dots on the far right side of the row of the campaign. You will see an option that says "Add to Template Library." 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, just navigate to the message you want to save, click edit to go to the template preview, and click on the edit drop-down and select "Save as template."