If you want to keep Microsoft 365 under your control while bringing domains, mailboxes, DNS, limits, alerts, reports, and sending-tool connections into one workflow, TenantCore is built for that operating model. Inframail takes a more managed infrastructure approach.
Quick comparison
If you want to keep Microsoft 365 under your control while bringing domains, mailboxes, DNS, limits, alerts, reports, and sending-tool connections into one workflow, TenantCore is built for that operating model. Inframail takes a more managed infrastructure approach.
You want to operate Microsoft 365 environments you control instead of buying mailbox infrastructure as the product. You want daily limits, infrastructure status, alerts, reporting, and mailbox operations tied together after setup. You want campaigns to stay in the sending tool you already use while TenantCore manages the infrastructure around them.
You want a provider to supply and host the mailbox infrastructure for you. A flat-rate, high-volume inbox model is more important than operating your own Microsoft 365 environment. You prefer infrastructure procurement and hosting to be the core service you are buying.
Where TenantCore fits
You want to operate Microsoft 365 environments you control instead of buying mailbox infrastructure as the product.
You want daily limits, infrastructure status, alerts, reporting, and mailbox operations tied together after setup.
You want campaigns to stay in the sending tool you already use while TenantCore manages the infrastructure around them.
Side by side
The important difference is not how many boxes each product can check. It is what you own, what the provider supplies, and what stays under your control as you scale.
Operating model
TenantCore
Operate connected Microsoft 365 environments and keep the surrounding outbound workflow in one place.
Inframail
Provisioned Microsoft-backed inbox infrastructure delivered as a managed cold-email service.
Microsoft 365 control
TenantCore
Your Microsoft 365 environment remains the foundation of the workflow.
Inframail
The service supplies and manages the mailbox infrastructure rather than acting primarily as an operations layer around your tenant.
DNS
TenantCore
Automatic DNS with supported providers, plus guided manual DNS for any provider.
Inframail
Automates SPF, DKIM, and DMARC as part of its infrastructure setup.
Sending tools
TenantCore
Keep campaigns in your sending tool and manage supported mailbox connections from TenantCore.
Inframail
Exports provisioned inboxes into external sending tools such as Instantly and Smartlead.
Ongoing operations
TenantCore
Domains, mailboxes, daily limits, access, infrastructure status, alerts, reports, and connections stay visible after setup.
Inframail
Public positioning centers on provisioning, hosting, DNS automation, and deliverability-oriented mailbox infrastructure.
Where Inframail may fit better
Inframail is not being treated as a bad product here. These are the situations where its current public model may match what you want more closely.
You want a provider to supply and host the mailbox infrastructure for you.
A flat-rate, high-volume inbox model is more important than operating your own Microsoft 365 environment.
You prefer infrastructure procurement and hosting to be the core service you are buying.
Frequently asked
No. Your campaigns stay in the sending tool you already use. TenantCore manages the Microsoft 365 infrastructure behind the mailboxes and keeps supported connection status visible in one place.
No. TenantCore is designed to connect to Microsoft 365 environments you control. A separate managed-tenant option is available when you want TenantCore to supply the environment instead.
When the goal is to keep Microsoft 365 under your control while reducing repeated work across domains, mailboxes, DNS, sending limits, sending-tool connections, monitoring, alerts, and reporting.
Bring domains, mailboxes, DNS, daily limits, sending-tool connections, alerts, and reports into one operating workflow as you scale.