03 / ESTABLISH

Domain and IP warmup for approved sending routes.

Introduce a new domain, IP or approved sending route with evidence-led pacing. Sky's in-house team plans and can execute the agreed ramp, using permissioned engaged audiences and available receiver responses to decide when to expand, hold or pause.

Book a discovery call

SKY / DELIVERY PRACTICE03 / WARMUP DECISION BOARD

Let the receiver set the pace.

PLAN THE NEXT BATCHPermissioned, engaged recipients

Confirm domain/IP identity, select a relevant segment and cap the next provider-specific increase.

READ THE RESPONSENot just a seed inbox

Review deferrals, complaints, hard bounces and placement samples alongside real audience behavior.

THEN MAKE ONE DECISION PER RECEIVING PROVIDER

EXPANDStable response and healthy audience signals

HOLDDeferrals, uncertain placement or thin evidence

PAUSEComplaint spike, policy concern or hard block

Illustrative stop/go rules; not a universal warmup schedule or inbox guarantee.

01WHEN THIS HELPS

For approved new sending routes, migrations or carefully planned volume increases.

02EVIDENCE & INPUTS

Read the evidence
across layers.

Domain and IP history

Engaged, permissioned recipient segments

Deferrals, hard bounces and complaint trends

Provider-specific pacing and threshold changes

Test-inbox observations, interpreted with caution

TEST SKY-OWNED TEST INBOX INVENTORY

A controlled test.
Not every inbox.

During a managed ramp, test inbox observations can help check an affected receiving environment. They support a decision alongside real traffic responses, complaints and audience history—not instead of them.

INVENTORY INCLUDES

Gmail
Microsoft Hotmail
Yahoo Mail
Microsoft 365
Google Workspace
US broadband / cable email accounts

The selected accounts and available coverage are agreed for the test. Consumer mail, business tenants and broadband/cable email accounts can have different receiving rules. An access network is not itself proof of a mailbox-placement result.

01 / DEFINE THE SAMPLE

Choose the route and receiving accounts.

Agree the sender, representative message, selected mailbox coverage, test window and reporting format before the test.

02 / READ THE OBSERVATION

Keep the result in context.

Compare observed placement with SMTP responses and authorized provider evidence. Test accounts do not reproduce every subscriber's history or tenant configuration.

03 / DECIDE THE NEXT TEST

Change one relevant variable.

Use the finding to support a scoped investigation or ramp decision. Repeat testing and follow-up are defined in the engagement; no fixed turnaround or inbox outcome is implied.

Why accepted mail is not proof of inbox placement

03THE WORKFLOW

What happens after
we start looking.

Set a baseline

Verify identity and list readiness before the first ramp step.

Increase deliberately

Expand by provider and engagement segment rather than forcing volume on a fixed calendar.

Pause on evidence

Slow or stop when deferrals, complaints or placement signals change materially.

04A CLEAR WORKING BOUNDARY

We know which part
belongs to whom.

01 / TO START

What we need

Domain/IP history, permitted audience segments, planned volumes, authentication and provider-specific telemetry access.

02 / SKY

What we do

Plan and execute approved ramp changes within a managed scope, or advise your operators if you retain execution. Review available receiver and test-inbox signals and record expansion, holding or pausing decisions.

03 / YOUR TEAM

What you retain

Audience permission and list quality, sending-account ownership and sign-off on live campaigns. The proposal identifies who controls the IP/account and who executes each ramp change.

Engagement model: Establish / warmup project

05WHAT YOU LEAVE WITH

A next step you can act on.

An executable ramp sequence, monitoring checklist and stop/go decisions by receiving provider; not an instant-inboxing promise.

See this engagement scope