Built by an operator
Inbox Bison is built and operated by someone who has sent cold email for years and personally provisions every tenant. No reseller markup, no support queue routed offshore — the person who built the infrastructure is the person who answers when something needs attention.
We're early. We'd rather earn trust with real work than with borrowed logos.
Reputation collapse
Shared sending infrastructure poisons domain reputation in weeks. Pipeline silently dies with it.
Invisible burn events
Without telemetry, infrastructure failures surface only after reply rates collapse and revenue stops.
Manual orchestration
Hand-configured SPF, DKIM, DMARC, and tenant routing. One drift event takes an entire fleet offline.
Deliverability decay
Your messaging is fine. Your sending infrastructure is the bottleneck — and it isn't observable.
Operational overhead
Engineering time spent rotating domains, rebuilding tenants, and firefighting blacklists instead of shipping pipeline.
No accountability layer
Reseller platforms vanish during incidents. Enterprise revenue requires enterprise-grade response.
Higher scaling potential
Azure tenants support volume Microsoft was engineered to deliver at — without the workspace ceilings that throttle Google fleets.
Enterprise deliverability
Microsoft 365's enterprise reputation graph favors authenticated outbound from isolated tenants over shared workspace traffic.
Azure ecosystem advantages
Native access to Azure regions, IP pools, and Microsoft Entra identity — the same infrastructure primitives Fortune 500 mail systems rely on.
True tenant isolation
Every fleet runs in a dedicated Microsoft tenant. No shared reputation surface, no cross-customer contamination.
Infrastructure flexibility
Programmatic provisioning, custom routing, and tenant-level policy control — designed for GTM engineering teams, not endpoints.
Enterprise authentication
Microsoft Entra ID handles identity, conditional access, and credential rotation as first-class infrastructure, not bolt-on auth.
Advanced routing
Multi-region failover, weighted send distribution, and reputation-aware routing across the Microsoft outbound mesh.
| Layer | Resellers | Google Workspace | Inbox Bison |
|---|---|---|---|
| Tenant architecture | Shared multi-tenant | Shared workspace | Dedicated Azure isolation |
| Identity layer | Basic SMTP | Google Workspace | Microsoft Entra ID |
| DNS provisioning | Manual | Manual | Automated orchestration |
| Burn detection | Reactive (manual) | None | Continuous telemetry |
| Recovery model | Submit a ticket | Procure a new account | Self-healing · automatic |
| Scale ceiling | Fragile at volume | Operationally limited | Multi-region · scales with your fleet |
| Operational model | Reseller transaction | DIY workspace | Managed deliverability layer |
- Microsoft 365 dedicated-tenant provisioning
- Automated DNS · SPF · DKIM · DMARC
- 14-day reputation warm-in
- 24-hour burned-domain replacement
- Deliverability telemetry dashboard
- Google Workspace fleet provisioning (GA)
- Hybrid Microsoft + Google routing
- Programmatic provisioning API
- Webhook events for reputation + replacement
- White-label client portal for agencies
- Per-client observability + branded reports
- SNDS + third-party blacklist integrations
- Reserved-capacity enterprise tier
One dedicated Microsoft 365 tenant, provisioned end-to-end
- 1 dedicated Azure tenant with 99 Microsoft 365 inboxes
- 20–30 cold sends/day per inbox at maturity
- Automated DNS · SPF · DKIM · DMARC
- 14-day reputation warm-in included
- 24-hour replacement on burned domains
- Smartlead / Instantly ready CSV delivery
Small-agency fleet — 3 tenants, multi-domain isolation
- 3 dedicated Azure tenants
- ~300 Microsoft 365 inboxes across isolated domains
- Automated DNS + reputation warm-in for all inboxes
- 24-hour replacement on burned domains
- Deliverability telemetry dashboard
- Direct WhatsApp / Slack line to the operator
- Smartlead / Instantly / Bison orchestration ready
Agencies running 5–15 clients in production
- 9 dedicated Azure tenants
- ~900 Microsoft 365 inboxes across isolated domains
- Priority provisioning queue
- 24-hour replacement on burned domains
- Real-time alerting + webhook events
- Priority operator support (same-day)
Agencies & GTM engineering teams operating at scale
- ~2,500 Microsoft 365 inboxes across dedicated tenants
- White-label client observability
- Custom branding for client-facing reports
- Dedicated operator on your Slack
- Named replacement SLA in writing
- Partner / referral program
Google Workspace inboxes for existing fleets
9 dedicated Google Workspace inboxes for $27/mo (~$3 each) to layer Gmail-to-Gmail reach on top of your Microsoft fleet. Launch offer: pay one month, get month two free. Best used as a complement to a Microsoft tenant — not as your primary infrastructure.
The person who builds it runs it
Every tenant is provisioned by the operator behind Inbox Bison — not a support tier, not a reseller portal. When something needs attention, you're talking to the person who architected your fleet.
Infrastructure, not a marketplace
Dedicated Microsoft 365 and Google Workspace tenants provisioned through proper channels. No shared reputation surface, no mystery upstream provider.
Rotation & replacement included
If a domain or inbox burns, replacement is part of the service — not a support ticket, not an upsell. That's the whole point of running this as infrastructure.
We're early — and honest about it
No fake logos, no borrowed testimonials, no compliance badges we haven't earned. If you want to see the real product, book a call and we'll walk through the actual dashboard.
The operator
Direct line to the operator
WhatsApp & Slack response within business hours. Same-day replacement on burned domains.
Built and run by an operator who's spent years sending cold email.
Inbox Bison isn't a marketplace and it isn't a reseller layer. Every tenant is provisioned personally — the same person who architected the infrastructure is the one who answers when a domain gets flagged.
After years of watching agencies burn revenue on fragile shared infrastructure, we built the deliverability layer we wished existed: dedicated Azure tenants, automated DNS, and a 24-hour replacement window written into every plan — not buried in a support policy.
If you want to see the real dashboard, hear how a fleet is actually provisioned, or ask questions no reseller will answer honestly — book a call. You'll be talking to the person building it.
How does the self-healing infrastructure operate?+
The platform monitors bounce signals, blacklist databases, and inbox-placement probes on a continuous cadence. When a node breaches its reputation threshold, traffic is paused and — if required — a fresh isolated Azure tenant is provisioned and warmed as a replacement.
Is this true Azure infrastructure or a reseller layer?+
Inbox Bison provisions dedicated Microsoft Azure environments through enterprise volume licensing. Every customer operates inside isolated tenants with no shared reputation surface. We are an infrastructure partner, not a mailbox marketplace.
What throughput should teams plan for?+
Plan for 20–30 cold sends per inbox per day at full reputation maturity — the industry-safe volume for Microsoft 365 and Google Workspace cold outreach. A 99-inbox Starter fleet is sized for roughly 2,000–3,000 sends/day; a 900-inbox Scale fleet for roughly 18,000–27,000/day. Higher-tier plans support negotiated throughput with dedicated tenant tiering.
How does reputation warm-in work?+
Every new node is enrolled in a 14-day reputation maturation pool. Conversational signal — replies, opens, and threaded interactions — is generated against peer nodes to establish authentic sending patterns before campaign traffic begins.
Can the platform integrate with our existing sending tools?+
Yes. Credential delivery supports Instantly, Smartlead, Bison, Salesforge, and any IMAP/SMTP-compatible orchestrator inside your stack.
How does infrastructure scale to many nodes?+
Capacity is distributed across US and EU Azure regions. Geographic and tenant diversification preserves IP reputation and routing resilience as fleets grow.
Do you support white-label for agency operations?+
Yes. Operator and Enterprise tiers include white-label observability, custom domains, branded client portals, and a partner program built for agency economics.