Email Subject Line Prompts: AI Templates for Higher Open Rates

Generate 10 subject lines for this email:

EMAIL TYPE: [Newsletter/Promo/Sale/Announcement/Welcome]
EMAIL TOPIC: [MAIN SUBJECT]
AUDIENCE: [WHO'S RECEIVING]
KEY BENEFIT: [WHAT THEY GET]
TONE: [Casual/Professional/Playful/Urgent]

Generate subject lines using these formulas:

1. Curiosity Gap:
Creates intrigue, makes them need to know

2. Number/List:
"7 ways to..." or "3 mistakes..."

3. Question:
Asks something they want answered

4. How-To:
Promises a solution or method

5. Urgency:
Time-sensitive, creates FOMO

6. Personal:
Uses "you" or feels one-to-one

7. Benefit-First:
Leads with what they get

8. Contrarian:
Challenges common belief

9. Story Teaser:
Narrative hook, cliffhanger

10. Simple/Direct:
Just says what it is

For each:
- The subject line (under 50 characters)
- Matching preview text (40-90 characters)
- Which formula it uses
- Expected open rate impact (1-5)

Avoid spam triggers and clickbait.

Generate newsletter subject lines:

NEWSLETTER NAME: [NAME]
THIS ISSUE'S MAIN TOPIC: [TOPIC]
SECONDARY TOPICS: [2-3 OTHER ITEMS]
AUDIENCE: [WHO READS IT]
SEND DAY: [DAY OF WEEK]

Create 5 subject line options:

1. Topic-focused:
Lead with the main story

2. Benefit-focused:
What they'll learn/get

3. Curiosity-focused:
Create intrigue to open

4. Personal/conversational:
Like a message from a friend

5. Number-focused:
Specific, scannable

For each include:
- Subject line (under 50 chars)
- Preview text that complements
- Why this might work for your audience

Best practices:
- Reference the day if relevant
- Consider using their name
- Don't oversell—it's a newsletter
- Stay consistent with brand voice

Generate promotional email subject lines:

SALE TYPE: [Flash sale/Seasonal/Clearance/Member exclusive]
DISCOUNT: [% off / $ amount / Free shipping]
PRODUCTS: [WHAT'S ON SALE]
DURATION: [How long the sale lasts]
AUDIENCE: [All subscribers/Segment]

Create 5 subject line variations:

1. Urgency-driven:
Time-limited, act now

2. Savings-focused:
Lead with the discount

3. Exclusivity:
VIP, early access, special

4. Product-focused:
Lead with what's on sale

5. FOMO-inducing:
Others are buying, don't miss out

For each:
- Subject line (under 50 chars)
- Preview text with details
- Best use case (which audience)

Include:
- Emoji options (if appropriate for brand)
- Non-emoji versions
- Spam trigger check

Avoid:
- ALL CAPS
- Multiple punctuation!!!
- "FREE" in subject (spam filter)

Generate cold sales email subject lines:

PROSPECT: [ROLE/COMPANY TYPE]
WHAT I'M SELLING: [PRODUCT/SERVICE]
KEY PAIN POINT: [WHAT THEY STRUGGLE WITH]
VALUE PROPOSITION: [WHAT I CAN DO FOR THEM]

Generate 5 cold email subject lines:

1. Question about their problem:
"Quick question about [pain point]"

2. Mutual connection:
Reference shared context (if any)

3. Compliment + ask:
Praise something real, then pivot

4. Straight value:
Direct offer of help

5. Curiosity/unusual:
Pattern interrupt

For each:
- Subject line (under 40 chars ideal)
- Why it might work
- Risk level (safe vs. bold)

Cold email best practices:
- Shorter is better
- Lowercase often outperforms
- Personalization helps
- Avoid salesy language
- Sound like a human, not marketing

Create A/B test variations for this subject line:

CURRENT SUBJECT: [YOUR CURRENT SUBJECT LINE]
CURRENT OPEN RATE: [IF KNOWN]
EMAIL GOAL: [WHAT YOU WANT THEM TO DO]
AUDIENCE: [WHO'S RECEIVING]

Create test variations:

VARIATION A - Control (slight improvement):
Keep the core idea, refine wording

VARIATION B - Different approach:
Same message, different angle

VARIATION C - Bold test:
Significantly different approach

For each variation:
- The subject line
- The preview text
- What it tests (curiosity vs clarity, etc.)
- Hypothesis for why it might win

Test ideas to consider:
- Emoji vs no emoji
- Short vs medium length
- Question vs statement
- Benefit vs curiosity
- Personal vs general
- Urgency vs evergreen

Provide:
- Recommended sample size per variation
- How long to run test
- Statistical significance threshold
- How to apply learnings to future emails

Generate re-engagement email subject lines:

SITUATION: [How long they've been inactive]
AUDIENCE: [Who they are]
WHAT YOU'VE TRIED: [Previous re-engagement attempts]
OFFER: [Any incentive you're including]

Create 5 re-engagement subject lines:

1. "We miss you" approach:
Emotional, relationship-focused

2. "What's changed" approach:
New features, content, offers

3. "Last chance" approach:
Before removal from list

4. Curiosity approach:
Make them wonder

5. Direct question:
Ask if they still want to hear from you

For each:
- Subject line
- Preview text
- Tone (guilt-free, not desperate)

Email sequence if using multiple:
- Email 1: Soft re-engagement
- Email 2: Value reminder
- Email 3: Final notice

Avoid:
- Making them feel bad
- Threatening language
- Sounding desperate

Generate welcome email subject lines:

BRAND: [YOUR BRAND NAME]
WHAT THEY SIGNED UP FOR: [Newsletter/Account/Purchase]
TONE: [Professional/Friendly/Playful]
NEXT STEP: [WHAT YOU WANT THEM TO DO]

Create 5 welcome subject line options:

1. Warm welcome:
Simple, friendly greeting

2. Confirmation + value:
Confirm signup, tease what's coming

3. Gift/offer:
If you're giving something

4. Personal touch:
From a real person, not "the team"

5. Action-oriented:
Get them doing something

For each:
- Subject line
- Preview text
- What it accomplishes

Welcome sequence (if multi-email):
- Email 1: Immediate confirmation
- Email 2: Key resource or next step
- Email 3: Deeper engagement

Best practices:
- Send immediately
- Set expectations
- Deliver any promised lead magnet
- Don't overwhelm