What is a cold email infrastructure partner?

A cold email infrastructure partner like port587 designs, builds, and operates the technical systems behind B2B outbound email: dedicated sending domains, mailbox setup, DNS authentication (SPF, DKIM, DMARC), warmup schedules, deliverability monitoring, and reputation management. The goal is to ensure cold emails reliably reach prospects' inboxes.

How much does cold email infrastructure cost?

Cold email infrastructure pricing varies by volume and complexity. port587 offers tiered plans based on sending volume, number of domains, and scope of management. Typical engagements range from foundational infrastructure setup to full done-for-you outbound operations including lead generation and campaign management.

How is port587 different from Apollo or Instantly?

Apollo and Instantly are software platforms you operate yourself. port587 is an infrastructure partner that builds and runs the underlying systems for you: domains, mailboxes, deliverability, lead sourcing, and campaign operations. You focus on strategy and closing; we handle the technical execution.

Do you also provide B2B lead data?

Yes. port587 operates a B2B SaaS leads database at data.587.agency with 100,000+ verified companies. You can search, filter, and export leads by industry, geography, company size, revenue, and funding stage. It is available as a self-serve product with pay-per-lead pricing.

What types of companies does port587 work with?

port587 primarily works with B2B SaaS companies, lead generation agencies, and outbound-focused teams. Our infrastructure and services are designed for teams that rely on cold email as a core pipeline channel and need reliable deliverability at scale.

Do we need an internal deliverability person at this volume?

Not necessarily. That's exactly what we provide. At 50k+ volume, you need dedicated deliverability expertise, but hiring for it is hard and expensive. We serve as your external deliverability team.

Playbooks50k+ / month

Cold email infrastructure for 50k+ emails per month

At 50k+ emails per month, outbound is a serious revenue channel. The infrastructure needs to be equally serious — governed, monitored, and designed for longevity.

Who this is for

Growth-stage and enterprise teams with outbound as a primary pipeline channel, sending 50,000+ cold emails per month.

Typical sending volume

50,000 to 200,000+ cold emails per month across multiple teams, segments, and geographies.

Common challenges

Infrastructure that was 'good enough' at lower volumes is now a liability at 50k+.
Multiple senders and teams creating uncoordinated domain and reputation risk.
Need enterprise-grade monitoring but don't want to build an internal deliverability team.
Leadership needs confidence that outbound infrastructure won't become a pipeline bottleneck.

What we cover

Full domain governance: inventory, allocation, rotation, and retirement policies.
Multi-team coordination so different segments don't cross-contaminate reputation.
24/7-capable monitoring with incident response protocols for deliverability issues.
Quarterly infrastructure reviews and capacity planning aligned with growth targets.

Infrastructure blueprint

Deploy 15-30+ domains organized by team, segment, and risk level.
Implement centralized DNS management across all sending domains.
Build real-time monitoring with alerting for reputation, blacklists, and placement.
Create runbooks for common incidents: domain burn, blacklist, ESP throttling.
Establish a domain pipeline: registration, warmup, production, retirement lifecycle.

Success metrics

Playbook

Portfolio-level inbox placement above 80% across all active domains.
Mean time to remediate deliverability incidents under 24 hours.
Domain lifecycle averaging 12+ weeks before needing rotation.
No unplanned pipeline disruptions due to infrastructure failures.

Want us to handle the setup? We'll build this infrastructure for you and hand it over production-ready.