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Email Deliverability Specialist

Customer.io· Customer Experience
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Hybrid (Americas Remote)$102k - $110k + equityFull-timePosted 2w ago

About the role

Deliverability specialist to diagnose sending issues, advise on best practices, and guide senders through an evolving email ecosystem. Works within Customer.io's deliverability program, partnering with Support, Customer Success, and Engineering to resolve complex cases and scale deliverability knowledge across the organization.

Responsibilities

  • Act as a trusted deliverability advisor to customers, handling complex cases through to full resolution and leading customer calls when a conversation needs it
  • Audit sender setup and monitor reputation across IPs and domains, using authentication (SPF, DKIM, DMARC) and BIMI, DNS configuration, and provider tools like Google Postmaster Tools, Yahoo Sender Hub, and Microsoft SNDS to diagnose blocklists, spam traps, and engagement drops
  • Work through highly technical issues with Engineering, taking ownership of the investigation first and sharing trends from customer cases with Product and Engineering
  • Identify acceptable use policy violations and spam complaints, hold clear and direct conversations with customers about compliance, and keep up with evolving standards (Gmail and Yahoo sender requirements, CAN-SPAM, GDPR)
  • Equip CSMs and Technical Support with the knowledge to handle deliverability conversations, through coaching, documentation, and training
  • Improve processes, tools, and one-to-many resources, such as help content, Academy course and proactive customer guidance, so deliverability support scales across the organization

Qualifications

  • 2-4 years of experience in email deliverability at a mid-size or large ESP, B2B SaaS company, or marketing automation platform, with exposure to deliverability at scale
  • Deep understanding of email authentication (SPF, DKIM, DMARC, BIMI) and infrastructure (SMTP, MTAs, DNS)
  • Proficiency with provider data feeds (Google Postmaster Tools, Yahoo Sender Hub, Microsoft SNDS) and third-party deliverability monitoring tools like Everest, MXToolbox, or similar
  • Analytical skill to turn bounce, engagement, and blocklist data into clear recommendations
  • Working knowledge of email compliance and acceptable use standards, and comfort having direct conversations with customers who are sending outside of them
  • Experience building or improving processes, documentation, or training for a scalable support/deliverability team
  • Excellent written and verbal communication, including comfort leading customer calls and simplifying technical concepts
  • Located in the United States or Canada
  • Bonus: participation in deliverability communities (M3AAWG, ESPC, or similar) and experience partnering with Customer Success teams

Skills

Required:Email deliverabilityEmail authenticationDNS and MTAsAnalytics and data interpretationCommunicationProcess improvement and training

Benefits

  • 100% coverage of medical, dental, vision, mental health, and supplemental insurance premiums for you and your family
  • 16 weeks paid parental leave
  • unlimited PTO
  • remote work stipends and wellness stipends
  • professional development budget
Last updated Oct 18, 2026. Interested? Apply on the company site.

About Customer.io

Customer.io Platform: Automation, Data, Content Creation

The customer engagement platform for personalized customer journeys across all channels, fueled by first-party data.

AutomationContent CreationCustomer JourneysCustomer engagementDataFirst-party dataPlatformbrex-fastest-growing-2025
Company profileWebsite

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