📢 Marketing
Email Subject Line Options From Offer Audience Proof
Paste your offer, audience, and proof into ChatGPT for ranked email subject line options with preheaders, A/B pairs, and spam-risk flags that invent no metrics.
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Prompt
Act as an email marketing strategist who writes subject line and preheader options from the marketer's offer, audience, and proof, and who never invents open rates, urgency deadlines, or testimonials the user did not supply.
Inputs:
- Offer or announcement in plain words: [Offer]
- Audience segment and what they already know: [Audience]
- Proof you may cite (metrics with sources, quotes with attribution, demos): [ProofAllowed]
- Goal of the email (click to page, reply, renew, attend): [EmailGoal]
- Tone and brand words to prefer or avoid: [ToneWords]
- Constraints (character soft caps, no ALL CAPS, legal/compliance notes): [Constraints]
- Spam-risk words or claims to avoid: [SpamAvoid]
Generate:
1. Ten subject line options grouped by angle (clarity, proof, curiosity without clickbait, question, utility). Each respects Constraints and SpamAvoid.
2. Matching preheader for each subject (does not repeat the subject verbatim).
3. Top 3 ranked for EmailGoal with a one-line why, using only Offer, Audience, and ProofAllowed.
4. Two A/B pairs (A vs B) testing one variable each (proof vs clarity, or question vs statement).
5. Spam and compliance flags: lines that risk SpamAvoid or over-claim vs ProofAllowed.
6. Reminder: no predicted open rates; test in your ESP.
Rules:
- Every proof number must appear in ProofAllowed.
- No fake scarcity ("only 2 left") unless Offer states it.
- Works in ChatGPT; paste ESP preview limits into Constraints if you have them.Instructions
Paste offer, audience, and proof only. Run in ChatGPT. Preview subjects in your ESP. Never add scarcity or stats you cannot defend. CAN-SPAM bans deceptive subject lines: no fake 'RE:' or 'FWD:' and no clickbait that misstates what is inside.
Generated Output
This image was generated using the prompt above.
Examples
Example Input
Offer: Mid-market 3PLs can start a 14-day read-only WarehouseOps AI pilot that flags late outbound orders before carrier cutoff. Audience: Ops managers at US 3PLs who saw our webinar last week; they know WMS basics; not yet customers. ProofAllowed: Harborline pilot 87% late-flag catch rate on 412 orders (pilot week summary); read-only CSV path; webinar attendance is known to us but do not invent attendee counts in copy. EmailGoal: click to pilot request form ToneWords: Prefer clear and practical; avoid "revolutionary", "guaranteed inbox", hype Constraints: Subject under ~50 characters when possible; no ALL CAPS; no emoji; FTC-honest; no competitor names SpamAvoid: free money, act now!!!, 100% open rate, winner, risk-free fortune
Example Output
1. SUBJECT OPTIONS (with angles) Clarity - Start a 14-day WarehouseOps pilot - Read-only pilot for late outbound flags Proof - Harborline: 87% late flags on 412 orders - Pilot numbers from Harborline week one Curiosity (no clickbait) - What your WMS may miss before cutoff - Before carrier cutoff, one extra list Question - Still rebuilding Monday exception lists? - Ready for a read-only late-order pilot? Utility - Flag late outbound orders before cutoff - Ops pilot: late flags from a CSV export 2. PREHEADERS (paired order above) - Read-only path; request the form when ready - Flags late outbound orders before carrier cutoff - Catch rate from the Harborline pilot week summary - 412 orders reviewed in the pilot week summary - A read-only CSV pilot for mid-market 3PLs - Built for dock and ops managers after the webinar - WarehouseOps AI on top of your WMS export - 14 days, read-only, one warehouse - Request the pilot form for mid-market 3PLs - No WMS replacement; add-on flags only 3. TOP 3 FOR CLICK-TO-FORM 1) Flag late outbound orders before cutoff - clear utility + Offer language 2) Harborline: 87% late flags on 412 orders - proof from ProofAllowed 3) Still rebuilding Monday exception lists? - audience pain without fake scarcity 4. A/B PAIRS Pair 1 (proof vs clarity): A "Harborline: 87% late flags on 412 orders" vs B "Flag late outbound orders before cutoff" Pair 2 (question vs statement): A "Still rebuilding Monday exception lists?" vs B "Start a 14-day WarehouseOps pilot" 5. SPAM AND COMPLIANCE FLAGS - Avoid any rewrite that adds act now, 100% open rate, or risk-free fortune (SpamAvoid) - Do not invent webinar attendee counts - Do not claim ROI beyond Harborline pilot figures pasted - No ALL CAPS; no competitor names 6. REMINDER No predicted open rates. Pick a pair, send through your ESP, and read real results.