Free email deliverability tools

Email & IP Blacklist Checker

Check if your email, IP, or domain is on any blacklist. Scans 50+ databases and shows your health score instantly.

SPF, DKIM & DMARC Checker

Verify your domain email authentication in one click. See which records pass, which fail, and how to fix them.

Email Verifier

Check if an email address is real before you send. Detects invalid mailboxes, catch-all domains, and SEG-protected addresses.

Inbox Placement Test

Test if your emails land in primary, promotions, or spam. Works across Gmail, Outlook, and Google Workspace.

Email Spam Checker

Paste your email copy and get a spam score. We scan for trigger words, formatting issues, and patterns that land you in spam.

Email Signature Generator

Create a professional HTML email signature in minutes. Works with Gmail, Outlook, and Apple Mail.

Email Warmup Calculator

Enter your target sending volume and get a day-by-day warmup schedule. Know exactly how many emails to send each day.

Subject Line Tester

Score your email subject line before you send. Get feedback on length, spam risk, and engagement potential.

Email Header Analyzer

Paste raw email headers and see the full routing chain, authentication results, and delivery delays in a readable format.

DNS Lookup Tool

Look up MX, A, CNAME, TXT, and NS records for any domain. See exactly how your domain is configured.

Domain Age Checker

Check how old any domain is. See registration date, expiry date, and registrar info. Domain age matters for email deliverability.

Email Bounce Rate Calculator

Calculate your email bounce rate and compare it against industry benchmarks. See if your list health needs attention.

Email Open Rate Calculator

Calculate your email open rate and benchmark it against industry averages. See how your campaigns compare.

Cold Email Mailbox Calculator

Enter your target replies and meetings. We calculate the exact number of mailboxes, domains, and daily sends you need.