We build email infrastructure for senders who cannot afford delivery failure

We started because we kept fixing infrastructure that should never have broken

In 2015, two engineers who had spent years managing email delivery systems for large European senders noticed a recurring pattern. Clients were experiencing serious deliverability problems — IPs on blocklists, DKIM misconfigurations, ISP deferrals nobody was monitoring — not because of bad practice, but because their infrastructure was either unmanaged or managed by teams that did not specialize in email.

Shared ESP platforms were the obvious alternative, but they came with structural problems: IP pools shared with thousands of other senders, limited configuration control, and the reality that when your sender reputation suffers because of a co-tenant, you have no visibility into why and no lever to pull to fix it.

The answer we kept arriving at was dedicated infrastructure — your own IPs, your own PowerMTA configuration, your own DKIM keys, your own reputation history. But managing dedicated infrastructure properly requires a level of specialization that most organizations do not maintain internally. ISP relationships, SNDS monitoring, FBL processing, bounce pattern classification, per-domain throttle configuration — these are full-time operational disciplines, not setup-once tasks.

Nine years later, we operate infrastructure for senders across the EU, UK, and globally — from SaaS companies sending transactional notifications to publishers running weekly newsletters to performance marketers operating at scale. The common thread is volume and the need for consistent, reliable delivery that does not degrade without warning and does not require the client to become an email infrastructure expert to sustain it.

What we actually do — and what we don't

We are an infrastructure company. That distinction matters. We do not build email marketing software. We do not design campaigns. We do not offer template editors or audience segmentation tools. We operate the layer underneath all of that: the servers, the IP pools, the MTA configuration, the authentication records, the monitoring, and the deliverability management.

Specifically, we operate:

• Managed SMTP relay — PowerMTA 6.x clusters on dedicated Linux servers with per-client IP assignment, DKIM signing per sending domain, and ISP-specific throttle configuration for Gmail, Outlook, Yahoo, and major EU providers including GMX, Web.de, OVH, and La Poste.
• IP warming programs — Structured warm-up schedules that introduce new IPs to ISP filtering systems progressively, with daily monitoring of reputation signals and adjustment of volume ramps based on actual ISP feedback — not calendar schedules that ignore what the ISPs are actually saying.
• Dedicated server environments — For clients who want full PowerMTA or MailWizz control. We provision, configure, monitor, and maintain the environment. The client owns the sending; we own the infrastructure reliability.
• Deliverability consulting and audits — When delivery is already broken, we identify why. Authentication misconfigurations, IP reputation damage, content patterns that trigger ISP filters, list hygiene problems — we diagnose the actual cause and fix it at the infrastructure layer.
• API-compatible relay layer — Mailgun v3 and SendGrid Web API v3 compatible endpoints that allow clients to migrate from commercial ESPs without changing application code. Same parameter names, same webhook structure, same response format.

What we do not do: manage your contact lists, write your email content, advise on campaign strategy, or accept clients whose use cases involve sending without clear consent. Infrastructure expertise is not a workaround for poor practice — it is an amplifier of good practice. We vet every client before onboarding because our IP pool reputation affects every client we operate.

Eight principles we operate by

These are not values statements on a wall. They are operational commitments that affect how we work with every client, every day — and that clients can hold us to.

• 1

  Transparency over comfort

  We tell clients when their list quality is the problem, when their content is triggering filters, and when the infrastructure we operate is not the limiting factor. Honest diagnosis serves clients better than reassurance, even when the answer is harder to hear. Our client relationships are built on trust in our analysis, not satisfaction with our messaging.

• 2

  No shared IP pools

  Every client sends from IPs assigned exclusively to their traffic. This is not a premium feature — it is the baseline we operate from. IP reputation is the foundation of inbox placement. Shared pools mean shared consequences. We do not offer shared pools because they represent a structural compromise on the one thing that matters most.

• 3

  Daily monitoring is not optional

  ISP behavior changes continuously. A configuration that produces 97% inbox placement this month may produce 82% next month if nobody is watching. We monitor Google Postmaster Tools, Microsoft SNDS, and 50+ DNSBL providers for every client, every day. When something changes, we act before the client notices — not after they report it.

• 4

  Same-day response to delivery incidents

  Email infrastructure problems compound hourly. Our SLA commits to a 2-hour response for P1 incidents. When something breaks, you reach an engineer who can fix it, not a support queue that escalates to one. We have never missed a P1 response time commitment since formalizing the protocol in 2020.

• 5

  We do not oversell capacity

  We take on new clients when we have infrastructure capacity to onboard them properly. IP warming is time-constrained — you cannot compress an 8-week warm-up into two weeks without damaging the reputation you are building. When we commit to an onboarding timeline, we mean it. We have turned down clients whose timelines were incompatible with proper onboarding.

• 6

  Data residency flexibility for every region

  Our infrastructure is operated from our datacenter at Tornimae 5, Tallinn, Estonia. Email logs, suppression lists, authentication keys, and client data are stored and processed entirely within EU jurisdiction. For clients operating under GDPR, this is not a preference — it is a compliance requirement. We handle Data Processing Agreements as a standard part of onboarding, not a special request.

• 7

  We vet every client

  Our IP pool reputation is a shared asset. Every client we onboard affects every other client's delivery environment. We review sending use case, list acquisition methodology, historical complaint rates, and content type before accepting a client. We decline clients whose practices would damage the infrastructure we operate for existing clients.

• 8

  Post-mortems for every incident

  When something goes wrong, we write a post-mortem that explains what happened, why it happened, and what we changed. These are available to affected clients and published in anonymized form on our status page. Accountability requires documented learning, not just closed tickets.

How we got here

Nine years of operating dedicated email infrastructure. Each entry below represents a real operational change — not a product launch or a rebrand.

What we actually believe about email infrastructure

These are positions arrived at from nine years of operating high-volume email infrastructure. Not marketing statements — conclusions from seeing what works and what does not.

Our infrastructure, in detail

Clients making a significant infrastructure decision should understand exactly what they are buying. Here is what we actually operate.

GDPR compliance and EU data residency

We are a company with operations across Europe, the Americas, and Asia-Pacific. Our infrastructure spans EU, Americas, and Asia-Pacific data centers. We are subject to GDPR as both a data controller (for our own operations) and a data processor (for client sending data we handle on their behalf).

Every client onboarding includes a Data Processing Agreement that specifies categories of personal data we process, purposes of processing, retention periods, and the sub-processors we use. This is not a generic template — it reflects the actual processing we perform for each client environment.

If your legal or compliance team needs additional documentation before onboarding — security assessments, sub-processor lists, data flow diagrams — contact us. We handle these requests as a standard part of enterprise onboarding.

How to work with us

Our onboarding process starts with a technical assessment — not a sales call. We want to understand your current infrastructure, sending volume, traffic types, ISP distribution, authentication status, and what is not working before we propose a solution.

Most clients come to us in one of three situations:

The technical assessment call is typically 45–60 minutes. You speak with an infrastructure engineer — not a sales representative. If we can help, we will tell you specifically how. If the problem is outside our scope or your use case is not a fit for managed dedicated infrastructure, we will tell you that too.