Subject Lines That'll Get Your Emails Read: The SSS Formula

A lot of people think a subject line should be one word or two that give a general idea about the "subject" that they're writing about; they don't put too much thought into it, and they write it after drafting the email. But actually the first thing you should start writing is the Subject Line. That space is there for a reason. It is one of the main components that make up a professional email. 

To make sure your message is viewed and replied to, crafting a good subject line is key. 33% of email recipients decide whether or not to open an email based on subject line alone.

Summary:
A professional subject line is SSS, which I call The Triple S:
  • Succinct 
  • Searchable
  • Smart

What does the Triple S mean?
A good subject line should briefly tell the reader what the email is specifically about (Succinct*), should be easily found in the future (Searchable), and should make the recipient want to read it and take the action you hope for (Smart).

*The word succinct means "summarized and expressed briefly yet precisely, without wasted words." 

So, if your subject line is not succinct, searchable, or smart, a big percentage of recipients won't read your email, won't be able to retrieve it later, or will forget to reply to you. 

And most importantly, if you have a blank subject line, which is the worst mistake you can make, your email will probably get  lost or will get the recipient annoyed with you.

How To Write A Triple S Subject Line?

A Professional Subject Line Is :

 SUCCINCT

  • Specifically Summarizes the topic (not just a meeting but also which, when, where, or with whom).
    E.g. Meeting invite for October 4th: Project Status UpdateE.g. Thank you for dinner on June 17th

    However, it never summarizes the content of the email. If  someone can get the answer they are looking for in the subject line, they won't bother and open the email and therefore might overlook other additional information you are trying to share. For example, don't write "Application for XYZ Rejected." Write "Application for XYZ Results."  
  •  Is short so it's readable on phones but not too shortE.g. Thank you , E.g. Meeting Invite  (too general).
    It should be no more than 10 words so choose wisely what to leave out. And since you don't know how much of the subject line will be viewable from a smartphone, it's important to put the most important information at the beginning. 
 SEARCHABLE
  • Includes keywords or precise details that will help the recipient search for the email and find it later. Keywords are the relevant topic, full names, numbers, or dates.
    E.g. [Referrer name] recommended I get in touch
  SMART

  • Gets the action you want or at least a response. So it includes a CTA meaning what action (if any) is required and when. You can add something like "please reply by deadline"  or if it doesn't require a reply, let them know by adding "no response needed" or "FYI*."
    E.g. Employee Survey: Please take by EOD* Friday
    *EOD= End of Day
    *FYI = For your information 
  • Is creative and catchy yet spam-proof. Sales or job application emails should invite curiosity through their subject lines and include persuasive hooks. However, avoid Big False Promises that you cannot deliver. Anyway they are automatically sent to spam usuallyE.g. You won 1 million $
  • Is not amateurish. It has no excessive punctuation and no spelling mistakes, it is not ALL CAPS, and it sure is not blank. Both all caps and over-punctuating can make you look like shouting or desperate; they might also trigger spam filters. 
    E.g. FOLOW UP!!!!!!

EXAMPLES OF PROFESSIONAL EMAIL SUBJECT LINES


  • Meeting invite for October 4th: Project Status Update
  • Meeting request from Elise Keith: Project Kickoff
  • Rescheduled: Project Kickoff moved to September 24th
  • Thank you for your ______ 
  • Met you at [event]. Let’s connect!
  • [Referrer name] recommended I get in touch
  • Human Resources Assistant Application — John Smith
  • Employee Survey: Please take by EOD Friday
  • ABC Reporter Interview Follow-up
  • Reply by Friday: Cast your vote for 

  • Free to catch up over coffee next week?
  • Inquiring about your design services
  • Request for information on NY venue

The Whole Lesson In 1 picture!







































Let's Recap with This Example

Let's take a look at the following subject lines. Which is better?

Meeting Invite
OR
Meeting invite for October 4th: Project Status Update

Of course it is the second one. It is Succinct, Searchable and Smart

It is Succinct

because it is brief; it is less than 10 words. So it is short but not too short. It summarizes the topic. Yet it is very precise since it is very very specific as you can see: we can know that the sender is requesting a meeting and the name of the person requesting the meeting, an what the meeting is about. 

It is Searchable 

because it includes relevant keywords that will help the recipient easily find the email later on and maybe even months after since all he needs to do is to scan for the keywords "Elise Keith," "Project Kickoff," and "Meeting Request" or simply type them in the search box. The reader will also be able to use this email in the future for reference.

It is Smart

because it is written in a grammatically correct way without spelling errors or excessive CAPS or over-punctuation. And it certainly isn't blank.

Now It's Your Turn.

Are you ready? Try to write an SSS subject line in your next email and see what difference it will make.

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