Create Eye-Catching Email Newsletter Subject Lines with AI

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Dive into our guide for quick insights, sample AI prompts, and best practices to boost your email open rates and drive real marketing results.

Discover how Media Shower can revolutionize your email conversion rates with creative subject lines and make your email marketing campaigns successful. Click for a demo.

First, Generate Your Marketing Overview

Paste the following prompt into ChatGPT or a similar AI tool:

Hello! I’m a busy marketing manager who wants to create a concise marketing overview for my business. I need your assistance in this process. Please ask the following ten questions, one at a time.– What is the name of your business?

– Please provide a link to your website.

– What industry does your business operate in?

– What products or services does your business offer?

– Who is your target audience or customer base?

– What is their pain point?

– What is the unique value proposition or key differentiator of your business?

– How long has your business been operating?

– What are the main goals and objectives of your business?

– Are there any specific marketing channels or strategies that you have used in the past?

Based on my answers, please generate a marketing overview to serve as a primer for future AI prompts. Leverage the 24 VIA character strengths where appropriate. Then, let’s check the marketing overview for accuracy, asking any clarifying follow-up questions if needed.

Then, Generate Your Email Newsletter Subject Lines

In the same chat session, paste the following prompt:

Based on this marketing overview, I want to create compelling email newsletter subject lines for my business. Please ask the following questions, one at a time, allowing me to skip questions I don’t know.

  • What is the primary thing you’d like to promote in this newsletter (e.g., webinar, blog post, promotion, something else)?
  • Do you have a preferred tone or style for email communications (e.g., formal, casual, humorous)?
  • What calls-to-action (CTAs) have been most effective in past email campaigns?

Based on my answers, please draft a few potential subject lines. Leverage the 24 VIA character strengths where appropriate. Then, let’s check the generated subject lines for accuracy, asking any clarifying follow-up questions if needed.

Improve your email campaigns with content crafted by Media Shower’s expert team. See how it works.

Prompts to Refine and Elevate Email Newsletter Subject Lines

The best results in crafting email newsletter subject lines come from a blend of AI expertise and human creativity. Below is a list of prompts that you can feed into a tool like ChatGPT to refine and optimize your subject lines.

1. Spice it Up: 

Make this subject line more exciting: [insert headline]

2. Tinker with the Tone: 

Rewrite this subject line to sound more urgent: [insert headline]

3. Use Industry-Specific Jargon: 

Add industry-specific terminology to this subject line: [insert headline]

4. Increase Curiosity: 

Modify this subject line to make it more intriguing: [insert headline]

5. Keep it Simple: 

Simplify this subject line: [insert headline]

10 Best Practices for Writing Effective Email Newsletter Subject Lines

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

Boost your open rates today by starting your Media Shower trial for AI-optimized email subject lines. Click to try us out.

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

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

Media Shower’s data-driven strategies to craft finely tuned, compelling subject lines enable you to watch your email open rates soar. Click here for a demo.