cPanel/WHM for Agencies · Canada
Stack Harbor is a Montréal-based managed service provider that hosts and runs cPanel/WHM servers for digital agencies in Canada and the United States, on its own infrastructure in two data centres in Montréal.
For agencies hosting client sites on cPanel/WHM, and for resellers who want their own brand in front of their clients.
Who It's For
Not a Fit
A Good Fit
What We Run
The exact scope is written into your quote. These are the parts most agency cPanel engagements include.
The SLA Facts
These are the committed terms. The agreement page has the full text, including the other severity levels.
24/7, on plans that include incident coverage. An operator confirms the incident and starts work or escalation; it is not an automated receipt.
The uptime commitment in the service level agreement, with the service credits it defines.
Requests go through the support desk. A Sev-1 incident is escalated to a senior engineer. The phone reaches your account manager.
Two Montréal data centres, including eStruxture facilities. Servers placed there are hosted in Canada.
Example Scenario
Example Scenario
About 80 cPanel accounts on one WHM server, mail delivery collapsed, PHP processes killed for memory and ModSecurity blocking real traffic: six weeks of in-place stabilization.
This is an example scenario: an illustrative engagement that shows how the work is done, not a specific client.
Read the Example ScenarioCommon Questions
We host and run the cPanel/WHM servers your client sites live on: WHM administration, OS and cPanel patching, security hardening, monitoring, malware response and incident response. Your agency keeps the clients, the design and the build work; we keep the servers healthy.
Yes, when they run on our infrastructure: two data centres in Montréal, including eStruxture facilities. We can also manage cPanel servers you already have with another host, and those stay where that host runs them.
Yes. By default your agency is the face to your clients, and we work behind the scenes. Co-managed arrangements, where your team keeps some of the work, are also common.
Yes: dedicated servers, VPS instances and cloud servers already running cPanel/WHM. The engagement starts with a review of OS and cPanel versions, patch state, backup coverage and security posture, so the quote reflects what is really there.
Sev-1 incidents are acknowledged within 15 minutes, 24/7, on plans that include incident coverage, and the monthly uptime commitment is 99.9%. The full terms are on the service level agreement page.
Workloads placed in Stack Harbor’s Montréal data centres are hosted in Canada. Environments you keep on AWS or another provider stay where that provider runs them. Where backups and any third-party services (a CDN, email delivery) store data is written into your scope, so check those if your residency requirement covers them.
No. We work with the stack you run, Apache or LiteSpeed, with or without CloudLinux. If the current configuration creates isolation or operational risk, the review says so, but no licensing change is required to start.
Yes, single accounts or whole servers. Migration work is scoped separately from ongoing management, so the cutover plan and the rollback path are agreed before any DNS change.
Stack Harbor publishes no prices. Each engagement is scoped to its drivers (sites, traffic, footprint, incident coverage) and gets a fixed quote after a scoping call.
No. Stack Harbor holds no SOC 2, ISO 27001, PCI DSS or HIPAA certification of its own. The facilities and platforms underneath hold their own attestations, and your auditor makes the determination. The trust page sets out the position in full.
Tell us how many servers and accounts you run and where they live. We review them and send a fixed quote.