Email marketing in 2026 has a deliverability problem.
PROMPTS
Generate and rank high-open-rate subject lines by psychology type
Generate high-performing email subject lines.
PRO TIPS
Include your 3 best-performing past subject lines.
Tested Mar 15, 2026
Build an onboarding series that converts subscribers into customers
Build a welcome email sequence.
PRO TIPS
Map your sequence to buyer awareness stages.
Tested Mar 15, 2026
Write cold outreach that lands in primary inboxes, not spam
Build a cold email campaign.
PRO TIPS
The best cold emails are under 80 words with zero links.
Tested Mar 15, 2026
Diagnose why emails land in spam and fix it systematically
Audit my email deliverability.
PRO TIPS
Send a test email to fresh Gmail, Outlook, and Yahoo accounts.
Tested Mar 15, 2026
Design automated nurture sequences with smart branching
Design an automated drip campaign.
PRO TIPS
Keep drip campaigns to 3 decision branches maximum.
Tested Mar 15, 2026
Design email experiments with statistical rigor
Design A/B tests for my email campaigns.
PRO TIPS
Test one variable at a time, highest impact first.
Tested Mar 15, 2026
Build a newsletter that people actually want to open every week
Help me build my newsletter.
PRO TIPS
Write 4 issues before you launch.
Tested Mar 15, 2026
Recover cold subscribers before you lose them for good
Build a re-engagement sequence.
PRO TIPS
Send from a personal name, not your brand name.
Tested Mar 15, 2026
Based on actual testing — not assumptions. See our methodology
Gemini 2.5 Pro
Best for drip campaigns.
Best for Drip CampaignsGPT-4.1
Best for email copy.
Best for Email CopyClaude Sonnet 4
Best for testing strategy.
Best for Testing StrategyGrok 3
Best for punchy copy.
Best for Punchy CopyOne email, one ask.
Deliverability trumps copywriting.
Cold email rules are completely different from newsletter rules.