Email Deliverability Audits
DMARC, DKIM, and SPF done right, plus the list hygiene and reputation work that decides whether your HubSpot email reaches the inbox at all.
You can write the best email in the world and it will not matter if mailbox providers quietly route it to spam. Deliverability is a technical problem first and a content problem second: authentication has to be correct and aligned, your sending domain has to have a reputation worth trusting, and you have to stop mailing the contacts who drag that reputation down. I audit all three, fix what is broken, and give you a sending setup that holds up as you scale.
DMARC, DKIM, and SPF Authentication
I audit your DNS records and fix the full authentication stack: SPF to declare authorised senders, DKIM to sign your mail, and DMARC to enforce alignment and report on abuse. I move you from no policy or a permissive one toward enforcement safely, watching the aggregate reports so legitimate mail never gets caught in the tightening.
Sending Domain and Reputation
I verify your sending domain in HubSpot, separate transactional from marketing sending where it helps, and structure subdomains so a marketing reputation problem cannot poison your corporate email. Where reputation is already damaged, I run a structured warm-up that rebuilds trust by mailing your most engaged contacts first.
List Hygiene and Suppression
Bad lists are the fastest way to wreck deliverability. I identify hard bounces, role addresses, likely spam traps, and chronically unengaged contacts, then build the suppression and re-engagement logic to stop mailing them. Sending less, to people who actually open, lifts placement for the whole list.
Monitoring That Catches Drift
Deliverability is not a one-time fix. I set up DMARC aggregate reporting and bounce and complaint tracking so a new tool sending unauthenticated mail, or a campaign tanking your complaint rate, shows up as a signal you can act on instead of a slow, invisible decline.
How It Works
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1
Audit
We check your SPF, DKIM, and DMARC records, your sending domains, and your list health, and document exactly where placement is leaking.
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2
Remediate
We fix the DNS records, verify domains, set suppression logic, and move DMARC toward enforcement while protecting legitimate mail.
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3
Monitor
We stand up reporting so authentication failures, reputation drops, and list problems surface early, and hand over a runbook your team can maintain.
Frequently Asked Questions
What is the difference between SPF, DKIM, and DMARC?
SPF lists which servers are allowed to send for your domain. DKIM cryptographically signs your mail so receivers can verify it was not tampered with. DMARC ties the two together, tells receivers what to do when a message fails, and sends you reports. You need all three aligned for reliable inbox placement, and DMARC is what turns the other two from optional into enforced.
Why are our HubSpot emails landing in spam?
Usually a mix of authentication gaps and reputation damage. Missing or misaligned DMARC, an unverified sending domain, sending to stale or purchased lists, and high bounce or complaint rates all push you toward the spam folder. The fix is to authenticate properly, clean the list, and rebuild reputation by sending to engaged contacts first.
Does list hygiene really affect deliverability?
Yes, more than most teams expect. Mailbox providers watch how recipients react to your mail. Sending to dead addresses, spam traps, and unengaged contacts raises bounces and complaints, which lowers your sender reputation and hurts delivery for everyone on the list. Suppressing the wrong contacts is one of the highest-leverage deliverability fixes there is.