Check your domain’s email authentication

Enter a domain and this reads its live SPF, DKIM, DMARC and MX records, counts your SPF DNS lookups against the limit of 10, and tells you what to fix. Add your DKIM selector to check a specific key; without one, the common selectors are tried. No account, no email required.

Why this matters for sending

Authentication is the part that decides whether you reach the inbox

Flomailr can check SPF, DKIM and DMARC on your sending domain before a campaign goes out and tell you what to fix. Suppression, daily caps and quiet hours are enforced on the server, so no setting or integration can talk its way past them.

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Guides for what this tool found