Readers who skim straight to the end of a long letter often read the postscript closely, which makes it one of the highest-leverage few lines you'll write.
Restate the Core Offer and Benefit
A P.S. that reminds the reader what they get and why it matters can recapture attention lost during a skim.
Reinforce Urgency or the Guarantee
The postscript is a natural place to restate a deadline or a risk-reversal guarantee for a reader who jumped straight to the end.
Consider More Than One P.S.
A second postscript addressing a different angle, like an added bonus, can capture readers who need one more reason to act.
Next step: Use the Sales Letter Writer to draft a strong closing P.S. that reinforces your core offer.