Seven free tools to write better subject lines, dodge the spam folder and see what your list is really worth. No signup required.
Subject Line Tester
Score any subject line for length, power words, spam risk and curiosity.
Spam Word Checker
Paste your email copy and spot trigger words before the filters do.
Email ROI Calculator
What is one campaign really worth? Plug in your numbers.
List Value Calculator
Estimate what your list earns per month and per subscriber.
Newsletter Idea Generator
Blank page? Spin up a fresh, fill-in-the-blank newsletter idea.
Click spin for your next newsletter idea.
Lead Magnet Idea Generator
Get a lead magnet concept tailored to your niche.
Enter your niche and hit generate.
DMARC & SPF Builder
Generate starter SPF and DMARC records to copy into your DNS.
Always confirm the exact SPF include value in your email provider's documentation. Only one SPF record is allowed per domain. Not technical advice for your specific setup.