High-volume B2C senders

At your volume, provider policy is a revenue line.

Once you send at scale, Gmail and Yahoo's rules stop being technical detail and start deciding what you earn. We build and maintain the sending infrastructure that keeps large programmes landing.

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Two decades of email & marketing infrastructure — brands our team has worked with

The bar you're held to

Authenticate, unsubscribe in one click, stay under 0.3%.

Since February 2024, bulk senders to Gmail must authenticate with SPF, DKIM and DMARC, offer one-click unsubscribe, and keep spam complaints below 0.3% in Postmaster Tools. Enforcement escalated through 2025 from throttling to permanent rejection. At high volume there's no margin for a setup that predates those rules.

<0.3%

complaint ceiling before throttling and rejection begin

~40%

of email never reaches the inbox — spam, blocked or missing

3B+

emails delivered by our team across two decades

2–3%

bounce rate above which hygiene is read as negligence

What volume actually requires

Infrastructure, not tactics.

Subdomain and IP architecture

Transactional, marketing and lifecycle mail separated so a promotional complaint spike can never stop a password reset. Designed properly once, before it matters.

Dedicated IP strategy and warm-up

When a dedicated IP helps and when it hurts. Volume decides, and getting it wrong is worse than shared sending.

Reputation monitoring

Domain and IP reputation watched continuously, so you learn about a decline from a dashboard rather than a revenue report.

DMARC at enforcement

Moving from p=none to quarantine or reject without breaking legitimate mail. Reports read and acted on, not archived.

Engagement segmentation and sunsetting

Rules that stop mailing people who stopped caring — the highest-leverage protection a large list has.

Migration under load

Changing ESP or IP at volume without losing the reputation you built. Staged, verified, reversible.

How we operate

Nothing changes against an unverified state. Records documented, change agreed, result verified. That rule came from a live DNS incident and has held since.
Phased work with verification gates. Each phase proves itself before the next begins.
Technical layer, clearly bounded. Authentication, routing, IP management, migration, monitoring — and we state what's out of scope up front.
We won't make unconsented data deliverable. At volume that's the fastest route to a dead domain.