Email tools that just work
SPF, DKIM, DMARC, MX records, header analysis, and more. Everything you need to debug, validate, and secure your email infrastructure — all in one place.
Email Toolkit
Pick a tool to get started. Results are instant.
SPF Record Checker
Validate your domain's SPF record and check for common misconfigurations.
DKIM Record Checker
Look up and validate DKIM public keys for any domain and selector.
DMARC Record Checker
Validate your DMARC policy, alignment settings, and reporting configuration.
SPF Record Generator
Build a valid SPF record for your domain with an interactive wizard.
MX Record Lookup
Look up mail exchange records and verify your email routing configuration.
BIMI Lookup
Check if a domain has a brand logo configured for email clients.
Email Validator
Validate email syntax, check MX records, and detect disposable providers.
Blacklist Checker
Check if your IP or domain is listed on any major email blacklists.
Email Header Analyzer
Paste raw email headers and get a human-readable delivery trace.
Bounce Decoder
Paste a bounce message or SMTP code and get a plain-English explanation.
DMARC Generator
Build a DMARC policy record with an interactive wizard.
DKIM Record Builder
Assemble a DKIM DNS record from your public key and settings.
DNS Propagation Checker
Check if your DNS changes have propagated across global servers.
DIG Tool
Query any DNS record type against public resolvers — dig in your browser.
Domain Info Lookup
Look up nameservers, SOA records, and domain registration info.
Reverse DNS Lookup
Look up PTR records and verify forward-confirmed reverse DNS.
Stop guessing. Start diagnosing.
All tools are free, require no signup, and give you instant results. Built for engineers who need answers fast.
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