Email Deliverability Audit - Cold Outreach Infrastructure Review (Fixed Fee)

I'm setting up cold email outreach infrastructure for a B2B campaign (50,000 contacts, 6 verticals) and want an experienced deliverability specialist to sanity-check the setup before I commit to inbox warming and annual billing. This is a one-off, fixed-fee review, not an ongoing engagement. I'll send a written brief covering campaign context, current infrastructure, and 5 specific questions. I need written answers back (or a single call, your preference), capped at 2 hours of your time. Requirements: - Demonstrated experience specifically with cold outreach infrastructure - domain warming, sender reputation, inbox placement. General ESP/newsletter experience (Klaviyo, Mailchimp) alone isn't a fit. - Comfortable with SPF/DKIM/DMARC, multi-domain/multi-inbox setups - Familiarity with Instantly.ai, Smartlead, or similar cold-outreach platforms essential In your proposal, please include: - reply rate and inbox placement results from a recent campaign (open rate alone won't be treated as a credibility signal).