Free email tools.

Check how a domain authenticates its email, or build a template to send.

• Email authentication checkerCheck SPF, DKIM, DMARC, and BIMI for a domain at once.
• MX lookupSee which mail servers receive email for a domain.
• SPF checkerRead and validate a domain's SPF record.
• DKIM checkerLook up a DKIM key by selector, or scan for common selectors.
• DMARC checkerRead a domain's DMARC policy and what it asks receivers to do.
• BIMI checkerCheck a BIMI record and its logo.
• AI email editorBuild an email template with AI, no account needed to start.