Omnisend AI helps you create high-performing subject lines, preheaders, and email content in seconds. Use AI-generated suggestions to save time, boost open rates, and improve engagement, without starting from scratch.
This guide covers AI-generated subject lines and preheaders, AI Writer for email body content, and additional tips and best practices
💬 New to Omnisend AI? Read the full overview: Omnisend AI: Get Started.
Before You Begin
You must have a store connected to Omnisend to generate AI content.
For best results, set up Brand Assets first – AI suggestions will reflect your brand voice.
💡 Multi-language tip: If you work in multiple languages, first translate content using AI, then use prompts in the target language.
AI-Generated Subject Lines & Preheaders
AI Subject Line Generator
Coming up with engaging subject lines and preheaders can be challenging. The AI Subject Line Generator creates optimized suggestions based on your campaign context.
💬 Why subject lines matter: Read Email Subject Line: Best Practices.
Step 1. Create an Email Campaign and click the AI icon next to the subject line field.
Step 2. Enter context about your campaign (e.g., "Black Friday sale, 30% off"). Omnisend AI will suggest three subject line variations.
Step 3. Refine suggestions using default prompts (change tone, translate, shorten, rephrase, simplify) or enter custom prompts.
Step 4. Once you select your preferred subject line, click on it to be inserted.
💡 Tip: You can also refine existing subject lines by clicking the AI icon.
AI Preheader Generator
The AI Preheader Generator works like the subject line tool, with a bonus: if you've already entered a subject line, it automatically suggests preheaders without extra input.
Omnisend AI Writer
The AI Writer improves your email copy and generates new content based on custom prompts. It works with any text-based element in the Email Builder.
💡 Benefits:
Writing assistance: Improve grammar, suggest alternative phrasing, and refine tone.
Time-saving: Generate content quickly instead of starting from scratch.
Language polishing: Ensure emails are professional and impactful.
How to use:
In the Email Builder, select the text you want to edit.
Click the AI icon and choose an option:
Write more: Generate additional content.
Improve grammar: Fix errors and refine phrasing.
Custom prompt: Enter your own instructions.
Additional Features
History Navigation: Your AI conversation history is saved. Return to previous chats by clicking the AI icon.
Clear History: Start a new conversation from scratch.
Tips and Best Practices
Subject Line Generator
When using the AI Subject Line Generator, follow this structured approach for best results:
Special Offer Promotion: Highlight special offers like free shipping, discounts, or site-wide sales. Use keywords to indicate offer details.
Products/Collection/Occasion Promotion: Promote specific products, collections, or occasions. Clearly state relevant details to attract your audience (e.g., Valentine's Day).
Time Limit/Urgency Promotion: Add time limits or urgency keywords to encourage quick action. Use phrases like "24-hour sale," "one week only," or "buy now."
Add Instructions about Mood and Character Count: Guide the AI on desired tone, mood, character count, and other specific requirements.
Tip 💡 You can write full sentences or use keywords.
Examples of Input Prompts and Results
Here are examples to help you understand how to use the AI Subject Line Generator effectively:
Adding Humor
Input:
Free shipping, back to school, backpacks. The tone should be funny or witty.
Result:
Back to School + Free Shipping = Best Backpack Deal Ever!
Where There's a Backpack, There's a Way - With Free Shipping
Adding Emojis
Input:
25% discount sitewide, all products, 24 hours only. Add relevant emojis. Write at least 40 characters but at most 50 characters.
Result:
25% 🤑 Everything Must Go! 24 Hours Only!
24 hrs Only! 🤑 25% OFF Sitewide!
Creating Time Limit/Urgency Promotion
Input:
Free shipping, back-to-school stationery, buy now. Add relevant emojis. Write at least 40 characters.
Result:
📓 Back to School Supplies + Free Shipping 📦 Buy Now!
📦 Free Shipping on Back to School Stationery 💼 Buy Now!
Setting a Serious Tone
Input:
Save the whales, donate to Whale Saving Charity. This is not a promotional campaign. The tone needs to be serious.
Result:
Your Help is Needed: Donate to a Whale Saving Charity
Be a Hero: Donate Today to Save the Whales
Other Languages
Our AI Subject Line Generator also supports other languages. Here's an example in Italian:
Input (Italian):
25% di sconto, ciotole in ceramica, solo oggi
Result:
25% di sconto su ciotole in ceramica: solo oggi!
Risparmia fino al 25% su ciotole in ceramica: solo oggi!
Omnisend’s AI Subject Line Generator helps you craft engaging subject lines for your email campaigns in a few clicks. Follow the recommended structure and provide clear input prompts.
Tailor the AI's tone and style to match your brand and always edit generated subject lines to align with your email content and brand voice.
AI Writer
Use natural language prompts and a clear structure to craft emails that align with your brand style and effectively communicate your message.
To maximize the effectiveness of the AI Writer, structure your email content logically:
Break Your Email into Logical Paragraphs: Divide email content into separate paragraphs, each conveying a distinct idea.
Communicate One Idea per Paragraph: Use one prompt to generate content for a single paragraph. This ensures clarity and focus.
First Paragraph Reflects the Subject Line: The opening paragraph should elaborate on the subject line to maintain consistency.
Add Additional Relevant Details: After the initial paragraph, add product information, images, or other content that supports your email's purpose.
💡 Tip: Enter queries in natural, full sentences. Start your requests with "I want to..." for better AI understanding and more precise results.
Example Email Structure
Here's how to use the AI Writer to craft an email promoting back-to-school backpacks with free shipping for purchases made within 24 hours.
Subject line: 📓24 Hrs Only: Back to School Backpack + Free Shipping📦
Email Structure:
Paragraph 1: Expand on the Subject Line
Prompt:
My subject line for this email is: "📓24 Hrs Only: Back to School Backpack + Free Shipping📦" I want to explain this concept in 1-3 sentences, but keep the tone celebratory.
Result:
Get ready for the new school year with style and practicality! For 24 hours only, get free shipping on our backpacks - don't miss out on this exciting offer!
Paragraph 2: Which Items are Valid (Show Product Details/Images/Prices, etc.)
Prompt:
I want to show that this offer is valid for four products: Green backpack, Yellow backpack, Red backpack, and Magenta backpack. Keep the same celebratory tone. Make it appealing. Don’t mention 24 hours or free shipping.
Result:
Our Green, Yellow, Red, and Magenta backpacks are the perfect way to start the school year off with a splash. Get your hands on one of these trend-setting backpacks and be the envy of your classmates! Grab yours now, and get ready to show off your style!
Paragraph 3: Tell What’s Special About These Backpacks
Prompt:
In 2-4 sentences, I want to explain that these backpacks are ethically sourced. They are made from organic fibers and can last for up to 7 years.
Result:
Our backpacks are ethically sourced and made from organic fibers, ensuring that they are of the highest quality. The material is designed to be durable and can last up to 7 years, meaning you can enjoy your backpack for a long time.
We believe in creating a better world and take pride in knowing that our backpacks are created with sustainability in mind.
Review and Adjust Your Email
Manually edit AI-generated text to reflect your unique brand voice and identity. Tailor content to suit your specific audience and campaign goals for more compelling and impactful emails.
Manually add product details, images, and other media elements. This ensures your email effectively showcases your products and captures attention.
If the generated text doesn't sound as desired, use the rephrase option to prompt the AI to produce alternative variations. Explore different options until you find the ideal wording that resonates with your audience.
Maintain a clear structure, use natural language prompts, and edit generated text to match your brand voice. Always review AI suggestions to ensure they align with your campaign goals.
FAQ
Can I use AI-generated content in Automation Workflows?
Yes. AI-generated subject lines, preheaders, and email content are available in both Email Campaigns and Automation.
Does the AI learn my brand voice?
Yes. If you've set up Brand Assets in your store settings, AI suggestions will reflect your brand's tone and style. The AI analyzes your website and brand information to generate content that matches your voice.
Is AI content generation available on all plans?
Yes. The AI Subject Line Generator, Preheader Generator, and AI Writer are available to all Omnisend users with a connected store.
Can I use the AI Writer in languages other than English?
Yes. The AI Writer supports multiple languages. First, use AI to translate your content into the target language. Once translated, you can continue using prompts in that language for further refinements.
Looking for help? Contact our award-winning Support Team right in the app or email [email protected].