Job Title

Clearlight Insightsis hiring a highly technical Email Delivery Specialist with deep expertise in domain authentication, deliverability engineering, and cold outreach infrastructure. This role requires hands-on experience managing complex sending environments and protecting domain reputation across multiple channels and platforms.Role Overview You will own the entire email delivery stack for Clearlight Insights - from DNS configuration and warm-up systems to deliverability monitoring, de-risking cold outreach, and troubleshooting server-level issues. You will be responsible for ensuring our communications consistently reach inboxes globally.Core Responsibilities 1. Domain, DNS & Authentication Management Configure and maintain SPF, DKIM, DMARC (strict enforcement), BIMI, ARC, and MTA-STS. Build secure DNS architecture for multiple sending domains and subdomains. Implement proper alignment policies and continuously validate authentication performance. Perform DNS audits, propagation testing, and record integrity checks.2. Deliverability Engineering & Diagnostics Diagnose inbox placement issues using tools like GlockApps, Postmark, Warmup Inbox, Mail-Tester, MXToolbox, ZeroBounce, and Google Postmaster Tools. Investigate bounce codes, spam triggers, blocklist issues, and MTA response errors. Monitor and maintain domain/IP reputation across major ISPs (Microsoft, Google, Yahoo, iCloud, corporate firewalls). Identify deliverability degradation early and execute recovery plans.3. Email Server & Hosting Infrastructure Manage and troubleshoot email routing, SMTP servers, and hosting environments. Set up and manage custom sending environments (Google Workspace + additional SMTP relays). Configure warming schedules and volume ramp-ups for new domains. Liaise with hosting providers when server or DNS-level issues occur.4. Cold Outreach System Setup & Compliance Build and optimize multi-domain cold email setups (emphasis on high deliverability and low risk). Implement send-limit management, throttling rules, rotation across mailboxes, and A/B infrastructure setups. Ensure compliance with CAN-SPAM, GDPR, and domain protection policies. Integrate and monitor platforms such as Instantly, Apollo, Lemlist, Reply.io, etc.5. Monitoring, Reporting & Optimisation Maintain dashboards for spam rate, open rate, domain reputation, and deliverability signals. Produce weekly technical reports on domain health and sending performance. Proactively recommend system-level improvements.Required Experience 5+ years of hands-on, technical experience in email deliverability, DNS management, and server-level troubleshooting. Deep understanding of MTA behaviour, SMTP protocols, ESP routing, and IP/domain reputation systems. Strong experience managing cold outreach infrastructure with multiple sending domains. Prior work with: Google Postmaster Tools, Microsoft SNDS, SPF/DKIM/DMARC setup tools, Sending platforms (GSuite, SMTP providers, cold email tools), Deliverability monitoring tools Ability to debug and resolve complex domain-level and ISP-level issues. Experience supporting distributed teams or agencies is preferred.