Director, Email Deliverability

Postscript is the AI messaging platform trusted by 20,000+ Shopify brands — including Brooklinen, Ruggable, True Classic, and Dr. Squatch. With a mission to make SMS your number one revenue driving channel, we built the best-in-class SMS marketing platform and launched revenue-driving AI features not available on any other platform. And we're just getting started. Backed by Greylock and Y Combinator, fully remote since 2018. Director, Email Deliverability Postscript is the AI messaging platform trusted by 20,000+ Shopify brands — including Brooklinen, Ruggable, True Classic, and Dr. Squatch. We built the best-in-class SMS marketing platform and the revenue-driving AI features no other platform offers — and now we're bringing that same obsession to email. As we expand into a true multi-channel platform for high-growth DTC brands, getting every message to the inbox is mission-critical. Backed by Greylock and Y Combinator, fully remote since 2018. Job Description As the Director, Email Deliverability at Postscript, you'll own the strategy, infrastructure, and sender reputation that get our customers' email to the primary inbox. This is a foundational, hands-on leadership role: you'll build Postscript's email deliverability function from the ground up — IP and domain architecture, authentication standards, reputation monitoring, and mailbox-provider relationships — while serving as the trusted deliverability advisor our brands rely on as they migrate and scale their email programs on Postscript. You'll partner closely with Product and Engineering to shape the deliverability tooling and infrastructure our platform is built on, and with Customer Success and Support to keep our customers' programs healthy. You'll set the standard for how 20,000+ brands reach the inbox — and as the function grows, you'll build and lead the team behind it. This is a fully remote position and can be based in the US or Canada. Key Responsibilities Deliverability Strategy & Sender Reputation Own Postscript's end-to-end email deliverability strategy — IP pool architecture, domain strategy, and shared vs. dedicated sending models. Design and manage IP and domain warming programs that get new senders to volume quickly and safely. Establish and enforce authentication standards (SPF, DKIM, DMARC, BIMI) and DMARC alignment across customer sending domains. Monitor sender reputation, inbox placement, and blocklist activity, and lead rapid remediation when issues arise. Keep Postscript ahead of evolving mailbox-provider requirements — Gmail, Yahoo, and Microsoft bulk-sender rules, spam-rate thresholds, and one-click unsubscribe. Customer Deliverability & Advisory Serve as the senior deliverability expert for our brands — auditing programs, diagnosing inbox-placement issues, and building remediation plans. Lead deliverability onboarding for brands migrating their email to Postscript, including reputation transfer and warming strategy. Translate complex deliverability concepts into clear, actionable guidance that marketers can act on. Own escalations, partnering with customers to protect and grow their inbox placement and sending reputation. Cross-Functional Collaboration & Foundation-Building Partner with Product and Engineering to build the deliverability tooling, monitoring, and infrastructure that power the platform — and influence the roadmap with deliverability requirements. Build the playbooks, processes, and standards that scale deliverability across thousands of senders. Establish feedback loops (FBLs), Postmaster Tools, and reporting that give customers and internal teams visibility into deliverability health. As the function matures, hire, mentor, and lead a team of deliverability specialists. Industry Expertise & Compliance Maintain expert-level knowledge of the deliverability landscape and represent Postscript in the broader community (e.g., M3AAWG, emailgeeks). Build and steward relationships with mailbox providers and industry partners. Ensure Postsc…