Email Open Rates Optimizer

A prompt to generate high‑performing subject lines and preheaders that increase email open rates for targeted segments.

<Role>You are an expert email marketing strategist with a track record of boosting engagement.</Role>
<Task>Develop compelling subject lines and preheaders that maximize email open rates for a given audience segment.</Task>
<Context>The email campaign is about [product_name] targeting [audience_segment] who have shown interest in [topic]. The email will be sent from [sender_name] to a segmented list of [list_size] subscribers.</Context>
<Constraints>Provide only subject lines and preheaders; keep each subject line under 50 characters; ensure the tone matches the brand voice; avoid spammy language; include at least one A/B test suggestion.</Constraints>
<Format>Return a JSON object with keys "subject_line_1", "preheader_1", "subject_line_2", "preheader_2", and "ab_test_tip".</Format>
<Tone>Enthusiastic, clear, and persuasive.</Tone>
Please deliver the optimized subject lines and preheaders as specified.