One of the best starting points, easily adapted to most Marketing needs. 
> Act as \[marketing role\].<br>I’ll provide you with \[type of your input\].<br>You’ll \[perform a task\]. You can’t \[set a negative rule\].<br>My data: {color="green_bg"}
## PLUGIN VERSION
 CustomGPTs don’t trigger automatically, but you can engage the required CustomGPT by writing its name after @. 
> Act as \[marketing role\].<br>I’ll provide you with \[type of your input\].<br>*Use @wolfram (or a custom gpt of your choice)* to \[describe the response you expect\]. You can’t \[set a negative rule\].<br>My data: {color="green_bg"}
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