Email deliverability consulting is diagnostic work. A consultant pulls signals from your DNS records, your ESP, Google Postmaster Tools, Microsoft SNDS, and the major blocklists, then works out why your mail lands in spam while a competitor's lands in the inbox. The discipline spans six layers: authentication, IP and domain reputation, list quality, content patterns, infrastructure configuration, and compliance. Most deliverability problems live in the gaps between those layers, which is why a tool that watches one layer rarely explains the whole picture. Our consultants are the engineers behind a verification engine that has processed 2.1 billion+ emails for 500,000+ GTM teams.
You do not always need a consultant. If bounces are the problem, running your list through self-serve email verification fixes most of it; 20 to 40% of B2B lists fail at catch-all domains alone. If a new domain needs reputation, automated email warmup handles the ramp. If you were listed once, blacklist monitoring tells you the moment it happens again. Hire an expert when symptoms persist across tools: revenue email that sits in spam after every checklist fix, postmaster metrics that decline without an obvious trigger, or a migration too risky to improvise.
Every engagement starts with a deliverability audit. We take read-only access, review all six layers, and deliver a written report with findings ranked by impact, then stay through implementation and monitor results for 30 days. The audit is the product: you keep the report, the fix plan, and the measurement baseline whether or not you keep us. The 30-minute discovery call that scopes it costs nothing, and we will tell you plainly if self-serve tooling covers your case.