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.

Is 10k emails per month enough to see results?

Yes, if your targeting and offer are tight. The goal at this stage is evidence, not max volume. Infra needs to be robust enough that you trust the results you see.

Playbooks10k / month

Cold email infrastructure for 10k emails per month

A practical blueprint for safely running ~10,000 cold emails per month without cooking your domains on the way to product-market fit.

Who this is for

Founders and lean GTM teams running early outbound experiments on a meaningful but not yet massive volume.

Typical sending volume

Around 10,000 cold emails per month across 1-3 ICPs.

Common challenges

Not sure how many domains or mailboxes you actually need.
Temptation to ‘just send more’ from one shiny new domain until it breaks.
Hard to tell whether bad results are about infra, lists, or the offer itself.

What we cover

Right-sized domain and mailbox plan for your current stage.
Conservative ramps that protect reputation while you learn.
Simple monitoring so you can see when infra is healthy vs. when to pause.

Infrastructure blueprint

Start with 2-3 domains dedicated to cold outbound, not your primary marketing domain.
Stand up 2-3 mailboxes per domain so no single sender carries all the volume.
Warm slowly to conservative daily caps (we’ll define them with you) before scaling.
Keep copy, list quality, and infra experiments separate so you know what’s moving what.

Success metrics

Playbook

Healthy open rates as a proxy for inbox placement while volume ramps.
Reply and meeting rates good enough to justify going from 10k to 30k+.
No catastrophic domain issues while you’re still validating offers.

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