We read the postscript first. Even when we receive a carefully structured email, a formal business letter, or a long newsletter, our eyes drift straight to the bottom of the page to see what follows those two letters. It's a quirk of human psychology that writers have used for decades to guide attention, emphasize key points, and drive action.
Understanding the PS meaning goes far beyond a casual habit of adding an afterthought to a handwritten letter. A postscript is a deliberate rhetorical tool. When used correctly, it grabs attention, highlights your most important takeaway, and transforms standard communication into something memorable. Let's look at why this simple abbreviation holds such weight and how you can use it to make your writing sharper.
The History and Evolution of the Postscript
The abbreviation PS stands for post scriptum, a Latin phrase meaning "written after." Long before digital screens, physical letters were written by hand with ink and quill. Adding information after the closing signature was often a logistical necessity rather than a stylistic choice. If the writer realized they forgot a crucial detail after finishing the main body, rewriting the entire parchment wasn't practical. Instead, they added a quick note at the bottom.
Over time, readers noticed a fascinating pattern. Even though the postscript sat at the very end, it was often the first thing people looked at. Psychological studies on reading habits confirm that human eyes naturally scan the beginning and the end of any text block.
As correspondence shifted from parchment to typewriters and eventually to digital screens, the practical necessity of the postscript vanished. You can easily backspace and edit an email to include missing information inside the main paragraphs. Yet, the postscript survived and thrived. Why? Because writers discovered its power as a psychological anchor.
Why the Postscript Commands Attention
The human brain processes written content through patterns. When we encounter a wall of text, our attention starts to wane. By the time we reach the signature line, reading fatigue has set in, and we are ready to move on.
A postscript acts as a pattern interrupt. It breaks the monotony of the standard paragraph structure. Because it sits outside the main flow, the brain treats it as fresh input.
- Primacy and Recency Effects: Readers remember the first thing they see and the last thing they read. The postscript sits right at the final resting point of the reader's eye, making it disproportionately memorable.
- The Curiosity Gap: A well-crafted postscript often introduces a fresh angle, a personal touch, or a final bonus piece of information that creates an immediate urge to re-read or take action.
- Conversational Tone: Formal letters can feel rigid. A postscript introduces a relaxed, sidebar feel, as if the sender is leaning in to whisper one last genuine thought before walking away.
Strategic Uses in Modern Communication
You'll see postscripts everywhere once you start looking—from direct response sales letters to corporate newsletters and personal emails. Each context leverages the psychological weight of the postscript differently.
Email Marketing and Newsletters
Marketers know that open rates and click-through rates dictate the success of a campaign. Many readers skim long newsletters rather than reading every word. Copywriters routinely drop their primary call to action or a strong incentive into the postscript because they know skippers will still see it. If you offer a discount code, a deadline reminder, or a free resource link, putting it in a postscript often doubles its visibility.
Professional Correspondence
In workplace emails, a postscript helps soften a direct or urgent message. If you need to deliver constructive feedback or request a tight deadline in the body of an email, a warm postscript asking about a coworker's weekend or referencing an upcoming project can maintain rapport. It separates the business task from the human relationship.
Personal Writing
In letters to friends or family, a postscript adds warmth and spontaneity. It mimics real-world conversation, where people often share their most important thought right as they are saying goodbye at the front door.
Common Mistakes to Avoid
Like any writing technique, overusing or misapplying a postscript ruins its impact. If every email you send has three different postscripts, the format loses its special status as a pattern interrupt.
- Burying the Main Idea: Your primary argument should live in the main body. If your entire message hinges on a postscript, your core structure needs rewriting.
- Making It Too Long: A postscript should be punchy. Keep it to one or two sentences maximum. If it requires a paragraph break, it belongs in the main text.
- Redundancy: Don't just repeat what you already said in the first paragraph. Use the space to add value, offer a different angle, or drive a distinct action.
For more insights on structuring effective professional messages, check out guidelines from the Plain Language Action and Information Network. Clear communication relies on respecting the reader's attention span, and few tools respect that attention quite as efficiently as a well-placed postscript.
Frequently Asked Questions
What does PS actually stand for?
It stands for post scriptum, which translates from Latin to "written after."
Can I use multiple postscripts in one message?
You can technically add a second postscript as PPS (post post scriptum), but doing so often looks cluttered and dilutes the impact. Stick to a single postscript for maximum effectiveness.
Should a postscript always include a call to action?
Not always. While marketers frequently use them for calls to action, a postscript can also be purely relational, humorous, or reflective.
Where is the best place to put a postscript in an email?
Always place it below your formal sign-off, such as "Best regards" or "Sincerely," and your name. Placing it above your signature makes it look like a standard paragraph.
