Free Email Marketing Tools
No signup. No API keys. No cost. Every tool runs in your browser and gives instant results.
Write Better Emails
Subject Line Grader
Score your subject lines on 10+ factors including length, power words, spam risk, and engagement triggers.
Use FreeSpam Word Checker
Paste your email body and instantly see which words might trigger spam filters, color-coded by severity.
Use FreeEmail Character Counter
Check character count, pixel width, and see how your subject line looks in Gmail, Outlook, and mobile.
Use FreeA/B Subject Line Tester
Compare two subject lines side by side and see which one scores higher on our grading algorithm.
Use FreeCheck Your Reputation
Blacklist Checker
Check if your domain or IP is listed on 15+ major email blacklists instantly.
Use FreeMX Record Lookup
Find out what email service any domain uses by looking up their MX records.
Use FreeDeliverability Score
Get an instant A-F grade on your domain's email authentication setup.
Use FreeSet Up Authentication
Plan & Optimize
Warmup Calculator
Get a day-by-day warmup schedule based on your domain age, current volume, and target.
Use FreeSend Time Optimizer
Find the best day and time to send your emails based on industry and audience type.
Use FreeEmail Frequency Calculator
Find your ideal sending frequency based on list size, industry, and engagement metrics.
Use FreeEmail Platform Finder
Answer 7 questions and get a personalized email marketing platform recommendation matched to your needs.
Use FreeMeasure Results
ROI Calculator
Calculate your email marketing revenue, ROI percentage, and revenue per subscriber.
Use FreeUnsubscribe Rate Calculator
Calculate your unsub rate and see how it compares to industry benchmarks.
Use FreeList Decay Projector
See how your email list will grow or shrink over the next 12-36 months.
Use FreeRevenue Per Subscriber
Calculate the dollar value of each subscriber and your total list valuation.
Use FreeTechnical Checks
HTML Email Size Checker
Check if your email HTML will get clipped by Gmail (102KB limit).
Use FreeCTA Contrast Checker
Check WCAG accessibility contrast ratios for your email CTA buttons.
Use FreeUTM Builder for Email
Generate UTM-tagged URLs for tracking your email campaigns in Google Analytics.
Use Free