Free Cold Email Tools

Improve your cold email deliverability with these free tools. No signup required — just paste, check, and optimize.

Available Tools

• Email Spam Word Checker — Paste your cold email copy and instantly see which words and phrases trigger spam filters. Get a deliverability score with actionable suggestions.
• DNS & Email Authentication Checker — Verify SPF, DKIM, and DMARC records for any domain. Checks 20+ DKIM selectors, detects your email provider, and flags misconfigurations.
• Domain & IP Blacklist Checker — Check if your domain or IP is listed on 22+ major DNS blacklists including Spamhaus, Barracuda, SpamCop, and SURBL.
• Email Subject Line Tester — Score your cold email subject lines before you send. Checks length, spam triggers, personalization, power words, and mobile preview.
• Cold Email Inbox Calculator — How many inboxes and domains do you need? Enter your daily send volume and get the exact setup with cost estimates.
• Email Warmup Schedule Generator — Get a day-by-day warmup ramp plan for your inboxes. See how long it takes to reach full volume.
• Cold Email Copy Analyzer — Analyze your cold email structure for maximum reply rates. Checks word count, reading level, personalization, CTA placement, and more.
• Cold Email ROI Calculator — Translate your cold email volume into projected revenue. See monthly pipeline, meetings booked, and ROI on infrastructure.