Craft Irresistible Email Subject Lines: Boost Your Open Rates Now!
Use the generator in seven easy steps: add topic, audience, goal, tone, and character limit, click Generate, then copy. Keep lines under 50 characters; emails with that length average a 12.9 % higher open rate (Marketo, 2021).
Email Subject Line Generator
Generating subject line...
Generated Email Subject Line:
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How to use the tool
Main topic: type a concise theme such as “Summer clearance flash sale” or “Quarterly investor snapshot”.
Target audience: describe recipients—for example, “Dorm-room decorators” or “SaaS trial users”.
Email goal: state the objective like “Drive store visits” or “Collect survey responses”.
Tone (optional): pick a style—playful, urgent, formal, etc.—to match brand voice.
Character limit (optional): enter 38 or 45 to avoid mobile truncation.
Generate: press the button; the API (action = process_llm_form) returns a tailored subject line.
Copy & test: paste the line into your ESP and compare performance against current benchmarks.
Quick Facts
41–50-character subjects earn the best engagement (Marketo Email Stats, 2021).
Personalized lines lift open rates by 26 % (Campaign Monitor, 2023).
Adding one emoji can boost B2C opens by 56 % (Experian Emoji Report, 2022).
Mobile apps truncate around 33–38 characters (Litmus Email Client Guide, 2023).
FAQ
What is an email subject line generator?
The generator is an AI model that predicts engaging phrases by analysing millions of email campaigns and their outcomes (Litmus 2023 State of Email).
Why keep subject lines short?
Shorter lines show fully on mobile screens, reducing cut-offs and raising opens by 12 % (Marketo, 2021).
How does personalization improve results?
Inserting the reader’s name or location creates relevance, lifting open rates by 26 % compared with generic text (Campaign Monitor, 2023).
Can I A/B-test different suggestions?
Yes. Export several generated lines, split your list 50/50, and compare open-rate metrics in your ESP dashboard (HubSpot A/B Guide, 2022).
Does excessive punctuation trigger spam filters?
Three or more consecutive exclamation marks raise spam scores by 5 points in SpamAssassin rules (Apache SpamAssassin Docs).
What tone converts best for promotions?
A friendly yet urgent tone increased retail opens by 17 % in a Shopify study (Shopify Email Benchmark, 2022).
How many characters display on Apple Mail?
Apple Mail on iPhone 12 shows roughly 37 characters before truncation (Litmus Client Guide, 2023).
How does the AI pick keywords?
The model weights terms with high historical click-through rates and inserts power verbs like “Unlock” or “Discover” (Mailchimp Keyword Study, 2022).
Important Disclaimer
The calculations, results, and content provided by our tools are not guaranteed to be accurate, complete, or reliable. Users are responsible for verifying and interpreting the results. Our content and tools may contain errors, biases, or inconsistencies. We reserve the right to save inputs and outputs from our tools for the purposes of error debugging, bias identification, and performance improvement. External companies providing AI models used in our tools may also save and process data in accordance with their own policies. By using our tools, you consent to this data collection and processing. We reserve the right to limit the usage of our tools based on current usability factors. By using our tools, you acknowledge that you have read, understood, and agreed to this disclaimer. You accept the inherent risks and limitations associated with the use of our tools and services.
