Welcome to cmercury Tools
Your all-in-one toolbox for smarter, faster, and more secure email marketing.
Whether you’re designing beautiful emails, optimizing deliverability, or protecting your sender reputation—cmercury Tools are here to make every part of your email marketing easier and more effective.
Explore our suite of free, easy-to-use tools built with marketers in mind.
Live HTML Viewer
Instant email preview. No refresh needed.
Build and test your email HTML with a real-time viewer that shows how your design looks across:
✅ Desktop
✅ Tablet (vertical & horizontal)
✅ Mobile
Free Responsive Email Templates
Jumpstart your next campaign.
Pick from professionally designed, fully responsive templates that work seamlessly across devices.
Email Template Builder
Design responsive emails—without writing code.
Use our drag-and-drop editor to build beautiful, mobile-ready email templates with ease.
Email DNS Records Checker
Troubleshoot deliverability issues fast.
Check your domain’s MX, SPF, DKIM, and DMARC records to make sure everything is set up correctly.
DKIM Generator
Authenticate and secure your emails.
Just enter your domain and selector value—our DKIM Generator will create a public-private key pair.
- Add the public key to your DNS
Use the private key to sign and secure your emails
Email Readability Analyzer
Make your content clear and engaging.
Test your email text with standard readability formulas to ensure it connects with your audience.
Password Generator
Create secure passwords in seconds.
Customize the complexity and length to instantly generate strong passwords.
Email Obfuscator
Keep spam bots at bay.
Protect your email address by encoding it—prevent scraping while keeping it visible to real users.