Research-backed prompting techniques from arXiv, rated for practical value
AI cold email writer for B2B founders who hate writing outreach
Stage
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Pricing model
Freemium
Freemium
Pricing
Not given
Free plan: 5 AI generations per day. Pro plan: $29 per month (billed monthly) or $23.20 per month (billed annually, save $69.60 per year). Pro includes 100 AI generations per day, all copy formats, copy history and favorites, and priority support.
Key features
715 published prompting techniques scored 80+ for practical value
Scores based on practitioner applicability, evidence strength, effect size, and novelty
Copy-paste prompts for ChatGPT, Claude, and Gemini
Links to original arXiv papers for every technique
Weekly newsletter with top techniques every Sunday
Four views per technique: breakdown, plain language, digest, and role-based guides
Browsable catalog organized by technique type and publication month
No account required to access all pages and techniques
Lab score range 80-97 indicates technique quality and applicability
AI cold email generator with deliverability scoring
Multi-format copy generation including emails, social posts, ads, and product descriptions
5 free generations daily with no credit card required
GDPR-compliant data storage
Copy history and favorites
Follow-up sequences
Export to PDF or DOCX
30-second email generation
No generic templates
Built specifically for B2B
What makes it different
Transparent scoring methodology with links to original papers for verification
Techniques tested across multiple models and use cases to confirm practical transferability
Purpose-built for AI cold email writing from the start, not AI bolted on later like competitors
Deliverability scoring on every draft to prevent spam filtering
You send from your own inbox, keeping your sender reputation under your control
No credit card required to start with 5 free daily generations
PromptLabster