Position Details: Email Deliverability & Infrastructure
Description:
Job Description
Email Deliverability & Infrastructure Specialist (Cold Email Marketing)
Position Overview
We are looking for an experienced Email Deliverability & Infrastructure Specialist who has a proven track record of building, managing, and optimizing large-scale cold email infrastructure.
This is not an email marketing/content role. We need someone who understands the technical side of email deliverability and can ensure our outbound campaigns consistently land in the inbox rather than spam.
The ideal candidate should have extensive experience setting up and managing email infrastructure using self-hosted or in-house servers, configuring domains and mailboxes, warming domains, maintaining sender reputation, and supporting high-volume outbound campaigns.
They will become the company's subject matter expert for all things related to outbound email infrastructure and deliverability.
Responsibilities
Email Infrastructure
- Build and maintain scalable email infrastructure from scratch.
- Configure and manage in-house SMTP servers or equivalent outbound email infrastructure.
- Set up email authentication protocols including:
- SPF
- DKIM
- DMARC
- Reverse DNS (PTR)
- MX Records
- BIMI (preferred)
- Configure dedicated IPs when required.
- Maintain healthy sender reputation across all sending environments.
Salesforce Email Infrastructure
- Configure Salesforce for high-volume outbound email campaigns.
- Integrate custom SMTP infrastructure with Salesforce.
- Optimize Salesforce email sending limits and architecture.
- Ensure one Salesforce instance can reliably send approximately 5,000 outbound emails per day while maintaining deliverability.
- Monitor and troubleshoot Salesforce email performance.
Domain & Mailbox Management
- Develop a scalable multi-domain strategy.
- Purchase and configure new sending domains.
- Create mailbox structures.
- Rotate domains intelligently.
- Rotate mailboxes based on campaign performance.
- Manage domain lifecycle.
- Build scalable infrastructure capable of supporting continuous outbound campaigns.
Deliverability Optimization
Own inbox placement across all campaigns.
Responsibilities include:
- Monitoring sender reputation
- Monitoring IP reputation
- Monitoring domain reputation
- Spam testing
- Inbox placement testing
- Bounce management
- Complaint management
- Blacklist monitoring
- Email authentication audits
- Troubleshooting spam issues
- Diagnosing deliverability drops
Best Practices & Strategy
Become our internal expert by:
- Creating SOPs for our outbound team.
- Advising SDRs on email best practices.
- Advising marketing on deliverability.
- Defining sending limits.
- Defining warm-up processes.
- Creating domain rotation strategies.
- Establishing mailbox retirement rules.
- Recommending infrastructure improvements.
Monitoring & Reporting
Track and report on:
- Inbox rate
- Spam placement
- Bounce rate
- Domain health
- IP reputation
- Open rates
- Reply rates
- Blocklists
- Deliverability trends
Provide proactive recommendations before issues impact campaigns.
Required Skills
Candidates should have proven experience with most of the following:
- Cold email infrastructure
- Email deliverability
- SMTP
- DNS configuration
- SPF
- DKIM
- DMARC
- Reverse DNS
- Dedicated IP management
- Domain reputation management
- Mailbox rotation
- Domain rotation
- Email warm-up
- Salesforce email configuration
- Microsoft 365
- Google Workspace
- Linux servers
- Postfix, PowerMTA, Mailcow, or similar mail servers
- Email monitoring tools
- Blacklist removal
- Bounce handling
- Spam diagnosis
Preferred Experience
Experience with tools such as:
- Salesforce
- Mailcow
- PowerMTA
- Postfix
- Mailgun
- Amazon SES
- SendGrid
- Instantly
- Smartlead
- Lemlist
- Google Postmaster Tools
- Microsoft SNDS
- GlockApps
- MXToolbox
What Success Looks Like
Within the first 90 days, the successful candidate should be able to:
- Build a scalable outbound email infrastructure.
- Establish multiple healthy sending domains.
- Configure Salesforce for reliable high-volume outbound campaigns.
- Improve inbox placement.
- Reduce spam placement.
- Create documentation and SOPs.
- Serve as the company's primary advisor on email deliverability.
Required Experience
- 5+ years of experience in email infrastructure or email deliverability.
- Demonstrated experience managing high-volume cold email systems.
- Proven examples of improving inbox placement.
- Experience supporting B2B outbound sales teams.
- Strong understanding of email authentication and DNS.
- Ability to troubleshoot complex deliverability issues independently.
Nice to Have
- Salesforce Administrator experience.
- Linux server administration.
- Experience with dedicated SMTP infrastructure.
- Experience managing millions of outbound emails.
- Familiarity with AI personalization platforms.
- Experience scaling outbound teams.
Screening Questions
- Walk us through how you would build a cold email infrastructure from scratch.
- How many domains would you use if a company wants to send 100,000 cold emails per month?
- How do you decide when a domain should be retired?
- Explain SPF, DKIM, and DMARC in practical terms.
- What causes emails to land in spam even when SPF, DKIM, and DMARC are correctly configured?
- Have you integrated custom SMTP infrastructure with Salesforce? Describe the architecture.
- Which inbox placement tools have you used?
- Describe the biggest deliverability problem you've solved.
- What metrics do you monitor daily?
- How would you scale an outbound system from 5,000 emails/day to 100,000 emails/day?
- Which mail server software have you worked with?
- Have you managed dedicated IPs? How did you warm them up?
- How do you monitor Google and Microsoft sender reputation?
- What is your process when a sending domain starts losing reputation?
- Describe a successful email infrastructure you personally built.
Red Flags
Avoid candidates who:
- Have only used Mailchimp or HubSpot newsletters.
- Have never configured DNS records themselves.
- Cannot explain SPF, DKIM, and DMARC.
- Have never managed domains.
- Have never handled deliverability issues.
- Only know marketing automation rather than cold email infrastructure.
- Cannot discuss sender reputation in detail.
- Have never managed large outbound sending environments.
- Cannot provide real-world examples.
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