EternalSender
The process

How EternalSender works

Most deliverability problems aren’t exotic, they’re missing records, unaligned authentication and unwatched changes. Our job is to make your sending identity complete, verifiable and registered where programs exist, then to keep watch so it stays that way.

  1. Baseline audit & identity setup

    We audit your domain’s email posture end-to-end. SPF, DKIM, DMARC, mail routing and TLS, and fix what’s broken. We then build your sender profile: the information providers use to judge who is legitimately sending as your domain. Everything is documented as your baseline, so future changes are measured against a known-good state.

  2. Provider registrations & trusted-sender configuration

    Where an email provider or sender program offers registration or submission (allowlist forms, sender programs, postmaster tools), we prepare and complete it for you. We call this work "whitelisting": our own registration process, built provider by provider, because it did not exist before we built it. Where no public program exists, we implement the technical standards and signals that provider filters actually use to evaluate senders, that’s where most of the wins are.

  3. Continuous monitoring & monthly health report

    From then on we watch your domain continuously: authentication records, cryptographic keys, DNS and routing health, sending infrastructure changes, reputation and complaint signals where data is available, and your registration statuses. Every month you get a plain-English health report, always available in your client dashboard, along with your full monitoring history, with recommended corrective actions before small problems become deliverability problems.

What we need from you: DNS access for your domain (or your provider’s admin), basic facts about how you send email (platform, volume, mail types), and about 30 minutes for a kickoff conversation. No access to your mailbox contents is ever required.

What the monthly report covers

Authentication status

SPF validity and changes, DKIM selector health, DMARC policy and alignment results, pass/fail for each, with trends against your baseline.

Infrastructure & routing

DNS record changes, mail routing health, and any detected changes in your sending infrastructure or IP addresses.

Reputation & signals

Domain and IP reputation indicators where data is available, spam and complaint signals, and provider-specific compliance checks.

Recommended actions

A short, prioritized list of what to fix or watch, written for a business owner, not a sysadmin.

What we can honestly promise, and what we can’t

No one can guarantee inbox placement. Final delivery decisions are made by each email provider, and no legitimate service can promise a guaranteed inbox button. What we can do is make your sending identity complete, authenticated, registered where programs exist, and continuously monitored, which is what removes the fixable reasons your mail ends up in spam. We sell trust registration and monitoring, not magic.

Individual sender addresses (beyond your domain) get the same treatment focused on that sender: domain association, provider status, authentication and the delivery signals available for that address.

Register your domain → See pricing