Write a subject line that gets opened
Works with ChatGPT · Claude
Get a clear, honest subject line that earns the open.
The problem
Great emails get ignored because the subject line is vague or salesy.
What this skill does
AI proposes specific subject lines that signal what's inside and why it matters.
When to use it
- Use before sending any email that must be read.
Juni’s tip
Juni says: tell them what's inside — curiosity gaps just get deleted.
The prompt
Try it live
Fill in the blanks — your ready-to-use prompt builds as you type.
Weak vs. better
write a subject line
Write 5 subject lines for this email: [email purpose]. Each under 8 words, specific about the ask or news, no clickbait. Mark which one I should use and why.
Why this works
Specific subject lines set the right expectation, so the email gets opened and acted on.
Practice task
Take an email you're about to send and write five subject lines, then pick one.
Self-check
- Each option is specific about the content
- None rely on clickbait or vagueness
- The recommended one matches the email's real ask
Common mistakes to avoid
- Writing one generic subject like 'Update'
- Over-promising to boost opens
- Making it longer than a phone preview shows
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