Free tools for
email developers
Build better emails with our free tools. Convert markdown to email-safe HTML, verify email addresses, and more. No sign-up required.
Available Tools
Everything you need to work with emails
Markdown to Email
Convert rich text to email-safe HTML with our visual editor and instant preview.
Email Verification
Verify email addresses instantly. Check DNS, MX records, typos, and disposable domains.
Why use these tools?
Built by email experts for email developers
Free Forever
No sign-up, no paywalls, no limits. Use our tools as much as you need, completely free. We believe in giving back to the email development community.
Developer-Focused
Built by developers who work with email every day. Clean outputs, instant results, and designed for real-world email workflows.
Production Ready
Generate email-safe HTML that works across all email clients. Verify emails with industry-standard checks. Our tools are battle-tested and used by thousands of developers.
Need production-grade email tools?
These free tools are great for development, but Plunk offers so much more: templates, scheduling, automation, analytics, and deliverability optimization. Start free, scale as you grow.