Email Header Analyzer

100% Free

Paste raw email headers — see hops, SPF/DKIM/DMARC, delivery time.

100% Secure

No Sign Up

Client-Side

Be the first to rate

Coming Soon

We're building Email Header Analyzer right now. Drop your email and we'll notify you the moment it's live.

Paste raw email headers — see hops, SPF/DKIM/DMARC, delivery time.

This tool is on the roadmap. The interface and full documentation are being built — check back soon, or request priority to bump it up the queue.

Flag known throwaway and temporary-mailbox domains in a pasted list — Mailinator, Yopmail, Guerrilla Mail, and a dated denylist.

Score your email subject line in real time — length, spam triggers, emoji, ALL CAPS, power words, and an open-rate hint.

Build a polished HTML email signature with your logo, contact details, and social links — copy the code or download it in seconds.

Validate email address format (RFC 5322), catch common domain typos, and clean a pasted list — all in your browser.

Build ready-to-send cold outreach, follow-up, newsletter, welcome, thank-you, and meeting emails in plain text or HTML.

Browse more free tools — no sign-up required