Cold Email · AI Powered

Cold email subjects that don't get deleted

Generate 5 high-converting subject lines in 5 seconds. Free, no signup.

Generate yours See how it works
35–60%
Open rate potential
5s
Time to generate
4,200+
Uses this week
The stack that 4,200+ sales pros use weekly

Send those subjects with the right tools

Subject lines are step one. These are the cold email tools that actually deliver them — battle-tested across thousands of campaigns.

14-day free
Send infrastructure
Smartlead
Scale cold email without landing in spam. Auto-warmup, unlimited inboxes, deliverability dashboard.
Unlimited inboxes Auto-warmup Sub-account analytics
Start free trial
Most popular
Contact data
Apollo
Find verified emails of decision-makers across 275M+ contacts. Free tier covers the first 50 emails/day.
275M+ contacts Free tier forever LinkedIn enrichment
Try free
14-day free
Personalization
Lemlist
Multi-channel sequences with dynamic images, video, and LinkedIn touches. Best for high-touch outreach.
Dynamic images Video personalization LinkedIn + email
Start 14-day trial

AD Includes partner links. If you sign up via these, we may earn a commission at no extra cost to you. Learn more

Example output · AI onboarding tool → VP Customer Success
generated · 5 subject lines · ai engine v2
01
Saw your LinkedIn post about onboarding — had one idea
02
How Intercom cut churn 40% with one change
03
Quick question about [Company]'s activation flow
04
Worth a 10-min call Thursday?
05
[First name], the subject that got us 61% opens
Generate your subject lines
Describe your offer in 2–3 sentences. The AI handles the rest.
Include: job title · company size · pain point you solve 0 / 500
Free · No account · Ctrl+Enter to generate
Want 100+ hand-tested winners across 10 industries? Get the $9 Pack →
5 subject lines generated
100+ subjects, hand-picked from real campaigns

The free tool generates good options. These are the best — tested across real campaigns, organized by industry, with notes on why each one works.

Get the Pro Pack — $9

How it works

Three steps. Five seconds. No account.

01
Describe your offer
Paste your value prop, target persona, and the pain you solve. The more specific, the better.
02
AI applies frameworks
Our AI engine applies proven patterns — curiosity gaps, social proof, pattern interrupts — for your specific offer.
03
Copy 5 variants
Get 5 distinct subjects in under 5 seconds. A/B test the top 2 on small batches before scaling.

The subject line is 80% of your email

Fix it, and your open rate doubles.

47%
Of recipients decide to open an email based on the subject line alone
69%
Mark email as spam based on the subject — before reading anything else
2.6×
More replies when subject feels personal and specific to the prospect
Pro Pack

100+ subjects, hand-picked across 10 industries

The free tool covers the basics. This is the next level — real subjects from real campaigns, organized for fast lookup when you're writing outreach.

  • 100 subject lines across 10 categories
  • 20 prompt templates for the generator
  • A/B testing framework
  • 7 pro tips on personalization, timing, mobile preview
  • Instant PDF download · Lifetime access
$9
One-time · No subscription
Get instant access
30-day refund · Secure checkout via Gumroad

Frequently asked

Yes — completely free, no account required. To keep it free for everyone, we limit usage to 10 generations per hour. Need more? The $9 Pro Pack gives you 100+ ready-to-use subjects instantly, plus 20 prompt templates.
The prompt is engineered specifically for cold email. It applies copywriting frameworks (curiosity gaps, social proof, pattern interrupts) rather than just rewriting your input. The output reads like a real sales pro wrote it.
100 hand-picked subjects across 10 categories (B2B sales, investor pitches, networking, job apps, partnerships, press, re-engagement, customer upsell, events, creator outreach), 20 prompt templates engineered for this generator, an A/B testing framework, and 7 pro tips.
30-day no-questions refund through Gumroad. If the subjects don't work for you, get your money back.
You can. But you'd spend 10 minutes per use refining the prompt. This tool is opinionated — it knows what makes subject lines work for cold email specifically. Faster, more consistent, no prompt engineering.