Stop Guessing. Start Reaching the Inbox.

Deliverability Hub DNS Checker

Stop wondering where your emails are landing. These deliverability tools help you track sender reputation, verify authentication, detect inbox risks, and optimize email performance so more messages reach the inbox and drive results.

All tools

Blacklist Monitor

FREE

Find reputation landmines before they quietly send your best campaigns to spam.

Protect sender trust DNSBL scan
Scan Reputation Now

Spam Score Predictor

FREE

Catch risky words, pressure-heavy copy, and link patterns before your launch takes a hit.

Save the send Copy risk score
Score My Email

Domain Authentication Validator

FREE

Prove to mailbox providers that your emails are really yours, not spoofed or suspicious.

SPF/DKIM/DMARC Live DNS records
Validate My Domain

Email Header Analyzer

FREE

Inspect SPF, DKIM, and DMARC results and trace third-party sending tools from raw email headers.

SPF/DKIM/DMARC Header trace
Analyze Headers

MX Record Checker

FREE

Check whether a domain has working mail servers before leads, replies, or client emails go missing.

Mail routing Live MX DNS
Check MX Records

Reverse DNS Checker

FREE

Verify PTR records for sending IPs so mailbox providers can trust where email is coming from.

PTR lookup Sending IP trust
Check Reverse DNS

What is My IP?

FREE

Instantly see the public IP address your browser is using to reach this site.

Public IP Copy ready
Check My IP

WHOIS Lookup

FREE

Check registrar, domain age, expiry, status, and name servers before trusting a sending domain.

Domain ownership Expiry risk
Run WHOIS Lookup

Nameserver Checker

FREE

Check authoritative NS records to confirm which provider controls a domain's DNS zone.

NS records DNS ownership
Check Nameservers

ESP Finder

FREE

Upload a CSV and count Gmail, G Suite, M365, Outlook, and other mailbox providers.

CSV upload Provider counts
Find Provider Counts

ISP Tracker

FREE

See where your emails may vanish across Gmail, Outlook, Yahoo, and Apple Mail.

Inbox visibility Provider preview
Preview Placement

Inbox Placement Test

FREE

Generate a tracking code, send test emails to your seed inboxes, and analyze inbox placement with a comprehensive scorecard report.

Inbox confidence Step-by-step flow
Run Inbox Placement Test

Template Analyzer

FREE

Turn beautiful email designs into inbox-safe templates that still render cleanly.

Design confidence HTML risk check
Analyze Template

Checklist Generator

FREE

Stop guessing what to fix next. Get a focused launch checklist based on your setup.

Next-step clarity Custom plan
Build My Checklist

A Record Checker

FREE

Verify IPv4 addresses (A records) point to the correct mail servers and resources.

IPv4 lookup DNS validation
Check A Records

AAAA Record Checker

FREE

Check IPv6 addresses (AAAA records) for modern email infrastructure support.

IPv6 lookup Future-ready DNS
Check AAAA Records

CNAME Record Checker

FREE

Verify CNAME records point to the right canonical names for email subdomain aliases.

Alias validation DNS mapping
Check CNAME Records

TXT Record Checker

FREE

Check TXT records (SPF, DKIM, DMARC) that build sender reputation and prevent spoofing.

SPF/DKIM/DMARC Authentication
Check TXT Records

Ready to Optimize Your Email Deliverability?

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