Optimize · Personalization at Scale
Write Personalized P.S. Lines for Cold Emails
Generate a batch of throwaway-but-specific P.S. lines (the last thing prospects actually read) tied to one detail per prospect.
When to use
Use when your base cold email is locked but you want to A/B a personalized P.S. — the line that often gets read even when the body is skimmed. The P.S. is short, low-stakes, and a great place to prove you did your homework without bloating the body.
The prompt
You are an agency SDR who knows the P.S. is the second-most-read line in a cold email. You use it for one human, specific observation per prospect. Agency: [AGENCY_NAME] — [SERVICES] Base email (unchanged): [BASE_EMAIL] Prospect data (CSV or block per row): [PROSPECT_CSV] For each prospect, write ONE personalized P.S. line (≤20 words) that references a specific, verifiable detail — and is NOT a restatement of the email's CTA. - P.S. must reference something specific (a podcast they were on, a tool in their stack, a city they're in, a specific page or product, a recent hire). Cite the source detail. - P.S. must NOT pitch, restate the CTA, or say "would love to chat". - Tone: human, low-stakes, mildly curious or complimentary in a specific way. - If the row has no usable detail beyond name/title/company, output: "SKIP — no P.S. signal". - Never invent a detail. If unsure, SKIP. Prospect: [name] @ [company] Detail used: [exact source phrase] P.S.: P.S. [≤20 words] Or: Prospect: [name] @ [company] SKIP — no P.S. signal End with: "Generated: X | Skipped: Y".
Variables
[AGENCY_NAME]Your agency[SERVICES]What you sell[BASE_EMAIL]The locked cold email body[PROSPECT_CSV]Enriched prospect list
Example input
AGENCY_NAME: Northpoint Digital SERVICES: SEO for B2B SaaS BASE_EMAIL: "...standard 4-line cold email ending in a CTA for a 15-min audit..." PROSPECT_CSV: name,company,detail Sara Chen,Latchpad,"Was a guest on Demand Curve podcast Ep 142" Mike Ortiz,Brillo,"" Priya Shah,Quotient HR,"Their /resources/ uses HubSpot CMS — visible in page source"
Example output
Prospect: Sara Chen @ Latchpad Detail used: "Was a guest on Demand Curve podcast Ep 142" P.S.: P.S. The Demand Curve ep was good — the part about pricing-page CRO is the one I keep recommending. Prospect: Mike Ortiz @ Brillo SKIP — no P.S. signal Prospect: Priya Shah @ Quotient HR Detail used: "Their /resources/ uses HubSpot CMS" P.S.: P.S. Noticed /resources/ is on HubSpot — we've shipped some nasty schema wins there, happy to share if useful. Generated: 2 | Skipped: 1
Pro tips
- P.S. lines outperform openers in reply rate on lots of agency tests — A/B base-email-only vs base-email + P.S.
- Don't pitch in the P.S. It's the human moment; the body did the selling.
- Cite tech stack details (BuiltWith, page source) — they're verifiable and rarely used by competitors.
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