Email DNS checker
Check the published mail records for your domain. See MX, SPF, DMARC and an optional DKIM selector, with clear next steps and direct browser DNS lookups.
Free email & DNS tools for your working day
Check email DNS, look up records, read message headers and build signatures or authentication records. Free browser-based tools, without an account.
DNS lookup
Look up DNS records directly from your browser with Google or Cloudflare. Inspect record values, TTLs and resolver responses without a RelyPost account.
Email header analyzer
Read email headers, Received hops and reported SPF, DKIM and DMARC results locally. No header uploads, account or external API needed.
Email signature generator
Create a clean HTML email signature with your name, role, company and contact details. Preview RTL or LTR, copy the signature or download HTML locally.
SPF record generator
Build an SPF TXT record from provider includes and IPv4 or IPv6 ranges in your browser. Check input syntax and copy a draft for your DNS settings.
DMARC record generator
Build a DMARC TXT record with a policy, optional aggregate-report mailbox and alignment setting. Start with monitoring and review before publishing.
Know where your data goes.
Signatures, header parsing and record generation run in your tab without uploading inputs. DNS tools contact your selected public resolver directly after you submit a name. The resolver sees the query and your IP address. No account is needed, and the tools do not save an input history.
RelyPost
Explore business emailGive your business its own email address.
Bring your domain, create team mailboxes and manage email in one workspace. Review the current free and paid plan limits.