Boost Email Open Rates: AI Subject Line Generator

Boost email open rates with our guide to high-performing newsletter subject lines. You’ll find examples, and best practices to help you create emails that get results.

Prompts to Refine Your Subject Lines

Use these prompts to polish and perfect your subject lines:

1. Spice it Up:

Make this subject line more exciting:

2. Tinker with the Tone:

Rewrite this subject line to sound more urgent:

3. Use Industry-Specific Jargon:

Add industry-specific terminology to this subject line:

4. Increase Curiosity:

Modify this subject line to make it more intriguing:

5. Keep it Simple:

Simplify this subject line:

Examples of Eye-Catching Email Newsletter Subject Lines

Here are some third-party examples of email newsletter subject lines for your inspiration:

We Are Travel Girls Email Newsletter subject line

example of an eye-catching email subject line Image Source: WIXBlog

We Are Travel Girls‘ email subject line, “Wanderlust Wednesday,” taps into a pre-existing trend. “Wanderlust Wednesday” is a recognized online phenomenon where travel enthusiasts share experiences and inspiration. The subject line instantly connects with a target audience primed for travel content. The newsletter’s strategic timing on Wednesdays reinforces the connection. Readers likely associate Wednesdays with the middle of the workweek, when the drudgery can set in, and daydreams of exotic escapes become more appealing.

Wix Blog Email Newsletter Subject Line

email newsletter example by Wix Image Source: WIXBlog

The Wix Blog’s subject line, “The dos and don’ts of great logo design,” uses a clear and concise format that immediately conveys the value proposition. Readers instantly understand they’ll gain practical knowledge on creating a successful logo. The “dos and don’ts” phrasing taps into a natural human desire for clear instructions and avoids ambiguity. People are inherently interested in learning what to do and what to avoid, making the email content seem informative and helpful. The subject line targets a specific pain point – creating a great logo. This resonates with businesses and individuals who understand the importance of a solid visual identity but might feel unsure about the design process.

Ando Bank Email newsletter Subject Line

email newsletter subject line by ando bank Image Source: WIXBlog

Ando Bank’s subject line, “Your Account is Still Waiting,” hinges on a clever use of urgency and intrigue. The subject line creates a sense of incompleteness or missed opportunity. It leaves the specific details about the waiting account a mystery. This information gap intrigues the reader to open the email to learn more. Considering Ando Bank’s focus on sustainability, the subject line can also be interpreted as “Your chance to bank with purpose is still waiting.” This subtle nod to their mission might resonate with environmentally conscious individuals who haven’t opened an account.

Thinking about spicing up your newsletter? Contact us to work with experts who can help you perfect high-engagement subject lines.

AI-Generated Email Newsletter Subject Lines

Company: Blooming Botanicals (Plant Subscription Service)

Subject Line: Unleash Your Inner Plant Parent: Discover Your Perfect Plant Match!

Why It’s Effective: This subject line uses a popular term (“plant parent”) to connect with the target audience and employs a sense of discovery (“perfect plant match”) to pique interest. It also uses strong verbs (“Unleash,” “Discover”) to create an engaging and action-oriented tone.

Company: RevGear (Fitness Equipment Retailer)

Subject Line: Spring into Action: Top 3 Home Workout Essentials (20% Off This Week!)

Why It’s Effective: This subject line leverages the seasonal shift to spring, a time when people often focus on fitness goals. It uses strong action verbs (“Spring into Action”) and highlights a valuable offer (discount) to create a sense of urgency and value.

Company: Luna Reads (Online Book Club)

Subject Line: Mystery Night! Unmasking the Author of [Book Title] – Join the Discussion!

Why It’s Effective: This subject line sparks intrigue with the “Mystery Night” theme and piques curiosity by mentioning an author’s reveal. It also mentions a specific book title, catering to readers already interested in that particular work and encouraging them to participate in the discussion.

Company: Pawsome Pets (Pet Care App)

Subject Line: Wagging Tails & Happy Trails: Tips for Planning Your Pet’s Next Adventure!

Why It’s Effective: This subject line uses playful language that appeals to pet owners (“Wagging Tails & Happy Trails”) and taps into the desire for fun pet experiences (“Next Adventure”). It also offers valuable benefits—tips for planning—making the email content seem informative and helpful.

Company: ShutterCraft (Online Photography Course Platform)

Subject Line: Master Smartphone Photography: Free Mini-Course Inside! (Limited Spots Left)

Why It’s Effective: This subject line caters to the growing popularity of smartphone photography and offers a free resource (mini-course) to entice potential customers. It also uses scarcity (“Limited Spots Left”) to create a sense of urgency and encourage immediate action.

Best Practices for Writing Effective Email Newsletter Subject Lines

State Your Message Clearly: Ensure the subject line accurately reflects the email’s content. A misleading subject line might garner an open but will also hurt your sender’s reputation in the long run. To learn more about crafting clear and concise subject lines, check out this email copywriting best practices article.
Create Urgency, Not Hype: Use time-sensitive language to inspire action without resorting to ALL CAPS, excessive exclamation points, or overly promotional language. Phrases like “limited time offer” or “ends this week” can nudge readers to open the email sooner but avoid sounding desperate or inauthentic.
Keep It Short: Aim for 50-60 characters to ensure your subject line is fully visible in most email clients. With limited space, prioritize the most important information. See here for tips on email subject line length.
Conduct A/B Testing: To understand what resonates best, routinely test different subject lines with a small segment of your audience. This data-driven approach helps you optimize your email campaigns for higher open rates. Many email marketing platforms offer built-in A/B testing functionalities.
Define Segmentation: To increase relevance, tailor subject lines to different audience segments. Consider demographics, purchase history, and interests when crafting subject lines for specific groups within your audience. See this guide on audience segmentation.
Infuse with Individuality: Use personalization tokens to make each email feel unique to the reader. For example, including a recipient’s name or referencing past purchases in the subject line can grab attention and create a more personal connection. See this email subject line personalization guide.
Avoid Spam Triggers: Words like “Free,” “Win,” and “Exclusive” can flag your email as spam. While these words can be tempting for promotions, it’s wiser to focus on the actual value you’re offering and avoid triggering spam filters. Read here for tips on how to prevent email spam filters.
Promote Seasonal Relevance: To boost interest, align subject lines with current events, holidays, or seasons. For example, mentioning “Spring Cleaning Sale” in March or “Back-to-School Essentials” in July can leverage timely themes that resonate with your audience.
Opt for Action: Use verbs to inspire action in your subject line, like “Discover,” “Learn,” or “Try.” Action verbs create a sense of urgency and encourage recipients to open the email to learn more. Here are great examples of call-to-action email subject lines.

10 Best Practices for Writing Effective Email Newsletter Subject Lines

State Your Message Clearly: Make sure the subject line clearly describes the email’s content.
Create Urgency, Not Hype: Use time-sensitive language to inspire action without using ALL CAPS or excessive punctuation.
Keep It Short: Aim for 50-60 characters to ensure your subject line is fully visible in most email clients.
Conduct A/B Testing: Routinely test different subject lines to understand what resonates with your audience.
Use Numbers: Numbers can quantify value and stand out, as in “3 Tips for Better SEO.”
Define Segmentation: Tailor subject lines to different audience segments for higher relevance.
Infuse with Individuality: Use personalization tokens to make each email feel unique to the reader.
Avoid Spam Triggers: Words like “Free,” “Win,” and “Exclusive” can flag your email as spam.
Promote Seasonal Relevance: Align subject lines with current events or seasons to boost interest.
Opt for Action: Use verbs to inspire action, like “Discover,” “Learn,” or “Try.”

The Media Shower platform lets you draft great newsletters using our AI assistants, with an award-winning creative team to help you turn them into marketing magic. Click for a free trial.

laptop receiving an email campaign

10 Frequently Asked Questions About Email Newsletter Subject Lines

What is the ideal length for an email subject line?

50-60 characters are generally best to ensure visibility in most email clients.

How do I improve email open rates?

Creating compelling, clear, personalized subject lines can significantly improve open rates.

Should I personalize email subject lines?

Adding the recipient's name or other personalized tokens can improve engagement.

What words should be avoided in email subject lines?

Is it effective to use emojis in email subject lines?

Emojis can grab attention, but use them sparingly and A/B test to ensure they display correctly across devices.

How do I A/B test email subject lines?

Use your email marketing software to send different subject lines to segmented parts of your list, then analyze which performs better.

What is the impact of using numbers in subject lines?

Numbers can make your subject line stand out and convey specific value, leading to higher open rates.

How do seasonal events affect email subject lines?

Seasonal themes can increase relevance and engagement but be mindful not to alienate those who don't celebrate certain holidays.

Should my subject line and pre-header text be similar?

The pre-header should complement the subject line, providing additional context without being repetitive.

How frequently should I send newsletters?

Frequency depends on your audience's needs and your content's value; consistency is key for sustained engagement.

10 Protips for Creating Email Newsletter Subject Lines

Data-Driven Approach: Use analytics. Leverage historical open rate data to inform future subject line choices.
Personalization Tokens: Insert unique elements. Utilize name or location tokens to make each email feel individually crafted.
Test and Adjust: A/B testing. Continually A/B test your subject lines to refine your approach based on real data.
Content Relevance: Align with content. Make sure the subject line is a precise reflection of the email’s primary message.
Audience Segmentation: Know your audience. Tailor your subject lines to appeal to different customer personas.
Scarcity Tactics: Instill urgency. Use phrases like “limited time” or “last chance” to encourage immediate action without sounding like spam.
Readability: Optimize for mobile. Test subject lines to ensure they are easily readable on mobile devices.
Multi-Cultural Sensitivity: Be globally aware. Be cautious of using idioms, slang, or local phrases if your audience is global.
CTA Incorporation: Drive action. If space allows, include a miniature call-to-action in the subject line itself.
Emoji Balance: Use emojis wisely. Incorporate one or two relevant emojis to make the subject line stand out without overshadowing the text.