Free Email & deliverability tools

Checker

SPF Record Checker

Free SPF record check and lookup tool: see the full record, every mechanism explained, DNS lookups against the limit of 10, errors and a fixed record.

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DMARC Record Checker

Free DMARC record check and lookup: test any domain's DMARC policy, see every tag explained, verify report addresses and get the next record to publish.

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DKIM Record Checker

Look up a DKIM record by selector or probe the common ones. See the key length, test mode, CNAME and provider, and what every tag means.

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Email Deliverability Checker

Test a domain's email setup in one go: MX, SPF, DKIM, DMARC, MTA-STS, TLS-RPT and BIMI, with copy-paste fixes for anything missing.

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SPF Record Generator

Free SPF record generator: pick Google Workspace, Microsoft 365, Zoho and 20+ other senders, add your IPs and get one valid SPF record with a 10-lookup count.

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DMARC Record Generator

Generate a DMARC record step by step: choose a policy, add a reporting address and alignment options, and get the exact TXT record for _dmarc.

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DKIM Record Generator

Generate a DKIM key pair in your browser and get the selector._domainkey TXT record, split into 255-character strings if needed, plus the private key in PEM.

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MX Lookup

MX lookup and email host finder: see which provider hosts email for a domain, its mail servers, priorities, IPs and reverse DNS, and any security gateway.

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Email Blacklist Checker

Check if your mail server IPs are on email blacklists (DNSBLs) like SpamCop, PSBL and UCEPROTECT, and find out how to get delisted.

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Email Header Analyzer

Paste raw email headers to see SPF, DKIM and DMARC results, every server hop and its delay, and why a message landed in spam.

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Email Verifier

Verify email addresses for free: syntax, typos, domain and MX records, plus disposable, role and free-provider checks. Check one address or up to 50 at once.

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Email Signature Generator

Create a professional HTML email signature with logo, brand colour, social links and UK company details. Four templates, live preview and one-click copy.

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MTA-STS, TLS-RPT & BIMI Checker

Check a domain's MTA-STS record and policy file, whether the policy covers every MX host, its TLS-RPT reporting, and BIMI logo readiness with DMARC.

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