The etiquette of email subject lines

Depending on what year it is, and what source you’re looking at, it is reported that more than 3 billion emails are exchanged each day. 

Because subject lines are like book titles, and we know the old “don’t judge a book by its cover” expression, emails are judged and, therefore, opened based on who sends them and the subject line. 

As a result, sending interesting, catchy and informative subject lines are critical; after all, it is the first impression for that day of you, your brand, your product or service and, absolutely, your connection.

Here’s a timely to-do list for subject-line success:

Do use a subject line. Blank subject lines are like calling someone and not leaving a message.

Do be honest and not misleading. Clickbait gets you sent to email jail, aka spam, junk or, worse yet, the blocked email list. 

Do focus on the subject line being 50 characters or less, ideally.

Do capitalize each word of the subject line, as this is similar to a book title. Don’t capitalize every letter in each of the words, as that is screaming at someone.

Do check your subscribers to ensure whether or not your email subject line will be translated into another language, and if so, ensure you are not being inadvertently offensive or inappropriate.

Do consider making subject lines based on segmentation of your teams, clients/customer, targeted prospects and others, and make the subject line relate to the area, segment and type of reader.

Do skip special characters (such as asterisks, at signs, pound signs, exclamation marks) and other “expressions,” since many service providers see them as an attempt to phish or spam. 

Do go ahead and use emojis, occasionally, as they are not considered special characters. (This is very new to most platforms).

Do change the subject line on a reply if something is being added, or omitted, in the response.

Do send an email of appreciation occasionally with a subject line of “Thank You for Being a Client/Subscriber/Top Client/Top Engager” with some statistics about your engagement with them. People like to be a part of successful practices.

With intriguing and true subject lines, watch your opportunity for opens to increase and for unsubscribes, deletes and blocks to decrease. After all, with billions of emails being sent each day, the subject line is your “book’s cover. You want yours opened and you want it read. 

Debbie Lundberg is the founder, and CEO, of the Florida-based firm, Presenting Powerfully. She is a 12-time published author, certified virtual presenter, certified life coach, certified leadership coach and certified image consultant. She co-hosts the Business Of Life Master Class podcast. Her book, Remote Work Rockstar, has become a guide for working and leading virtually.

You May Also Like
How to effectively qualify sales opportunities

If you’re reading this, you already know that sales can be a challenging business—constant rejections, numerous dead ends, endless price quotes and proposals that often don’t lead to anything. It’s

Read More
How Sales Managers and Salespeople Can Thrive in 2025

As the new year begins you (hopefully) have drafted and are preparing to implement a plan to increase sales and drive revenue, in 2025. Take a moment to survey the ever-changing

Read More
Jim Marshall
Traversing long-term traumatically impacted people & conversations kindly 

By Loran Jarrett, DBA, and Debbie Lundberg, MBA  Educators, Entrepreneurs and Hurricane Helene/Milton Home Loss Victims You hear about it on the news or through a friend of a friend

Read More
The unsung ripple effect of back-to-back hurricane disasters in the SBA world

By Brooke Mirenda, CEO of SEDCO  As a Small Business Administration lender, I received notice on Oct. 15, at 5:30 p.m., that the SBA has already exhausted its disaster funding

Read More
Brooke-mirenda
Other Posts
Mental health in the wake of Tampa Bay’s double hurricane hit 

By Carrie Zeisse, chief executive officer of Tampa Bay Thrives Tampa Bay residents are no strangers to hurricane season, despite the area being spared a significant, direct, hit for over

Read More
Sales Leaders: Stop working so hard

If you’re a sales director, or manager, you already know you have one of the most difficult and demanding jobs in business today.  Motivating and holding your people accountable, training

Read More
Jim Marshall
Adapting to Uncertainty: How to Thrive Despite a Crumbling Economy

Last week, an entrepreneur I know well was speaking at a private mastermind group I’m a part of and as he was talking about how tough things have been for

Read More
Ari Page: How to Thrive Despite a Crumbling Economy
How to receive feedback

Dear Debbie: A few months ago, you shared how to be a sponsor and speak up. I love it and, yet, sometimes when I get feedback, I get embarrassed and

Read More