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Write subject lines and preheaders that get opened
Describe the email and its one action; get ten subject lines in three styles with matching preheaders and a spam-risk check.
The prompt
Write subject lines and preheaders for this email.
Context: the email: [paste or summarize]. The one thing readers must do or know: [action]. Past subject lines that worked for us: [examples]. Our house style: [e.g., sentence case, no emoji].
Audience: [audience], seeing this in a crowded inbox, mostly on mobile.
Tone: clear first, clever second; never misleading.
Must include:
– Ten subject lines across three styles: plain statement, benefit-led, and question
– A matching preheader for each that adds information rather than repeating the subject
– A one-line note on why each could work
– Any options that risk looking like spam or clickbait, and why
Constraints: subject lines under 50 characters; preheaders under 90; no “urgent”, no all caps, no exclamation marks.
Output: a table with subject line, preheader, style, and note.
Works in
Any AI toolHow to use
Paste two or three of your past subject lines that performed well — it will learn your house style from them.
Related Resources
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Not sure which past subject lines worked? Ask Insights Assistant to rank your campaigns by open rate with their subject lines, then feed the winners into this prompt.
The prompt
Write subject lines and preheaders for this email.
Context: the email: [paste or summarize]. The one thing readers must do or know: [action]. Past subject lines that worked for us: [examples]. Our house style: [e.g., sentence case, no emoji].
Audience: [audience], seeing this in a crowded inbox, mostly on mobile.
Tone: clear first, clever second; never misleading.
Must include:
– Ten subject lines across three styles: plain statement, benefit-led, and question
– A matching preheader for each that adds information rather than repeating the subject
– A one-line note on why each could work
– Any options that risk looking like spam or clickbait, and why
Constraints: subject lines under 50 characters; preheaders under 90; no “urgent”, no all caps, no exclamation marks.
Output: a table with subject line, preheader, style, and note.
