Email Deliverability Results & Case Studies

How engagements work, the problems we solve, and the outcomes these projects target.

By Henry Timmes · Email Deliverability Consultant · Named contributor to RFC 7489 & RFC 9989 (DMARC)
Case StudiesEmail DeliverabilityMicrosoft 365
Henry Timmes
Henry Timmes Email Deliverability Consultant · Named contributor to RFC 7489 & RFC 9989 (DMARC)

How engagements work, the problems we solve, and the outcomes these projects target.

How an Engagement Works

Every engagement starts the same way: a free 15-minute consultation to understand what you send, where it's landing, and what you've already tried. From there, a typical deliverability project moves through diagnosis, a prioritized fix plan, and implementation support - with Microsoft 365 problems the most common reason senders reach out.

The Kinds of Problems We Solve

Microsoft junking. Mail that inboxes everywhere except Microsoft 365 and Outlook.

Sudden reputation drops. A sender whose placement collapsed after a list or infrastructure change.

Hard blocks. Senders stuck on a Microsoft or blocklist rejection they can't clear.

Authentication failures. SPF/DKIM/DMARC misconfigurations breaking legitimate mail.

B2B list decay. Rising bounces and complaints from a stale business list.

What Results Look Like

Illustrative of the kind of outcome these projects target (representative scenarios, not specific clients):

SituationTarget outcome
Mail junking at Microsoft 365 despite clean Gmail placementAuthentication aligned, reputation rebuilt, Microsoft inbox placement restored
Stuck on a Microsoft hard blockRoot cause resolved, block cleared, sending resumed
Rising complaints from a decayed B2B listRisky and dead addresses suppressed, complaint rate brought back under threshold
Have a before-and-after of your own? A short, specific, anonymized client result belongs here - real numbers you can stand behind are far more persuasive than any claim.

Frequently Asked Questions

What kinds of email deliverability problems do you solve?

The most common are Microsoft 365 junking, sudden reputation drops, hard blocks on Microsoft or blocklists, SPF/DKIM/DMARC misconfigurations, and B2B list decay driving bounces and complaints.

How does a deliverability engagement work?

It starts with a free 15-minute consultation, then moves through diagnosis, a prioritized fix plan, and implementation support. Microsoft 365 problems are the most frequent reason senders reach out.

Emails landing in spam?

Henry Timmes diagnoses why your mail isn't reaching the inbox - Microsoft 365, Gmail, Yahoo and beyond - and maps a practical fix. Book a free 15-minute call, no obligation.

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