Work out where the problem actually sits.
We check the sending identity and infrastructure, then compare that with audience quality, complaints, engagement, volume changes and provider-level behaviour.
- SPF, DKIM, DMARC, Return-Path, PTR/rDNS and HELO
- Sending domain and IP reputation
- Google Postmaster and Microsoft reputation signals where available
- Blocklists, bounces, deferrals and delivery evidence
- List quality, suppressions, complaints and disengagement
- Cadence, volume changes and contact pressure