Everything from the Myers-Briggs test to a Buzzfeed quiz provides people with insights into their own tastes, preferences, and categories they belong to. Some fun methods of categorization—such as this blog’s introversion vs. extroversion breakdown—give marketers clues into audiences’ likes and dislikes, which can then be applied to their brand voice and email marketing strategies. The insights we discuss below ultimately help marketers analyze their email subscribers’ behaviors and craft content that fits into their communication preferences.

When looking at any individual or group of people we can learn much about them, depending on how they identify across a wide spectrum of categories, such as . . . 

• Are they more of an East Coast or West Coast person? Do they feel as if they have Southern charm or Midwestern grit?
• Are they within the ever-provocative Gen Z? Or do they fall within a generation that’s been well-studied and marketed to, such as Millennials, Gen X, or Baby Boomers?
• Do they identify as a Swifite or even a Musketeer?

This all goes to show that there are tons of buckets anyone can identify with. And perhaps the most common method of categorization focuses on determining where people live on the Introvert-Extrovert spectrum. 

Thanks to today’s data analysis capabilities, AI can determine where anyone falls within these aforementioned categories (yes, even the Swiftie/Musketeer spectrum!), and then generate interesting email subject lines for each group’s and individual’s preferences.

Since we’ve already explored the categories within the aforementioned bulleted list (yes, even the Swiftie/Musketeer spectrum!), let’s see how Backstroke’s email subject line creator generates great email subject lines for people who lean toward extroversion, introversion, and everyone in-between. 

Great Email Subject Lines Based On Email Checking Frequency

You likely have an idea on how frequently your subscribers check their inboxes. For the sake of this thought experiment, we’ll label people who check email frequently as extroverts. They clearly love to communicate! We’ll assume that quieter, more reclusive introverts won’t check emails as frequently. And of course, there are a ton of people who fall somewhere between these two poles. 

In Backstroke’s email subject line creator, you can set audience preferences to account for all. Click the Add Audience button to get started.

The Audience Filters panel will appear on the left. From there, you’ll see a slew of custom categories you can select from to generate great email subject lines! For this example, we’re going to focus on the Email Checking Frequency drop-down. 

Here, you’ll see four options to select from: 

• All Day: This selection is for people who tip toward extroversion. They’re frequent communicators, and they’re pretty social, loving their frequent chit chat!
• At Least Weekly: This selection is for the ambiverts—aka people who live somewhere between extroversion and introversion—who prefer a more balanced approach to their communications. 
• At Least Monthly: This selection is for people who are more introverted, preferring their communications to be less frequent, but still very impactful.
• All: These are the extreme extroverts. People within this category check their emails very frequently—across all aforementioned timelines. 

Toggling between these options and clicking the Apply button will save your audience’s communication preferences when generating content in the email subject line generator. 

Of course, applying insights into people based on their preferred frequency of communication is the first type of introvert-extrovert subject line filter we can apply . . . But there are others email marketers can use too. Keep reading to learn how to really hone in on creating great email subject lines for whomever you’re sending to. 

Great Email Subject Lines Based On CAPS vs. Sentence Case Preferences

Beyond the frequency of checking their inboxes, Backstroke can generate effective email subject lines based on other introversion/extroversion criteria. For example, our AI can inform marketers on preferences between which emotions your subscribers are more likely to interact with. While Backstroke’s natural language processing capabilities truly understand copy sentiment—you can read more about that here—its email subject line creator can also generate copy that comes across as loud or quiet. 

This is where the Slang, All Caps, and Risk filters in the Attributes panel come into play. You can find them to the left of the Audience panel. Backstroke users can toggle between all three to generate great email subject lines that are bold, colorful, quiet, calm, and anywhere in-between.

We suggest the following settings to make your subject lines hit the right notes:

• Go big on Slang and All Caps, then slide the Risk filter over toward Stand Out, if you want your brand to sound more loud and outgoing. 
• Choose to include some Slang and insert All Caps sometimes, then keep the Risk filter hovering in the middle, to ensure your brand’s voice has the sensible nature of an ambivert. 
• If you’d like to sound more reserved and perhaps corporate, opt to not include Slang or All Caps words. Be sure your Risk filter is toggled toward the safer side of the spectrum, too. 

No matter where your subscribers—or your brand voice—fall on the spectrum between introversion and extroversion, Backstroke’s AI email subject line generator can craft the messaging content that’s perfect for your next campaign.

Create a free account and experiment with generating AI subject lines for whomever you’re sending to.