Free tools.
Six analyzers and checkers cold-email teams actually use. Everything runs in your browser — no signup, no data leaves your machine.
SPF Checker
Inspect your SPF record. Detects missing -all, lookup limits, deprecated ptr.
DMARC Checker
Pull your domain's DMARC. Explain the tags. Surface common misconfigurations.
Headers Analyzer
Paste raw email headers. Extracts auth results, hop chain, spam flags, and Reply-To shenanigans.
Spam Trigger Scanner
Paste a body. Lists the spam-trigger words and patterns mailbox providers flag.
Template Analyzer
Full template scoring — reading time, personalization, CTAs, link count, subject length.
From-Name Analyzer
Preview how your "From" name renders in Gmail mobile, Outlook desktop, Apple Mail.
Most paywall this. We don't.
If we're the deliverability product cold-email teams trust, the least we can do is open-tool the questions every deliverability engineer asks every day. No login, no upsell wall in the middle of a check.