Contact EmailAuthKit
Report a correction
Write to Acerville Sparks Limited, Suite RA01, 195-197 Wood Street, London, E17 3NU. Identify the page, record type, provider and the exact statement you believe is wrong. Do not send passwords, DNS credentials, private DKIM keys, message bodies or customer data.
Support boundary
We cannot access your DNS or email tenant, publish records or guarantee delivery. For account-specific settings, use your email and DNS provider's authenticated support channel.
Authoritative references
Read the underlying standards and provider instructions before changing production DNS: RFC 7208 (SPF), RFC 9989 (DMARC), Google Workspace SPF guidance and your sending provider's current DKIM documentation.
Make a report reproducible
Name the page, provider, public record type, non-sensitive example and exact sentence or output in question. Redact local parts of email addresses and do not include full message bodies, customer lists or account screenshots.
Operational incidents
Postal correspondence is not an incident-response channel. If legitimate mail is failing after a DNS change, use the saved rollback value and contact the email or DNS provider through its authenticated support route.
Editorial responsibility
Published by Acerville Sparks Limited. Software assists research, drafting and automated record testing. Internet standards, provider documentation, reproducible checks and limitations are shown so readers can inspect the work. No independent deliverability consultant review is claimed. Reviewed 4 September 2026.
What this site does not do
No inbox guarantee. No live DNS checks. No storage of entered data. No passwords or private keys requested.