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Deliverability

TenantCore helps you build and operate reliable outbound infrastructure, but no infrastructure platform can guarantee inbox placement. Deliverability depends on a combination of technical configuration, sender reputation, list quality, message content, recipient behavior, and provider filtering.

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What TenantCore can help control

TenantCore can help with infrastructure factors such as:

• Microsoft 365 tenant and mailbox configuration
• MX/SPF/DMARC/DKIM readiness
• mailbox sending limits
• sending usage visibility
• sending-tool connection status
• infrastructure status monitoring
• bounce and spam-related reputation signals
• alerts and Reports

These controls reduce avoidable infrastructure mistakes.

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What TenantCore cannot guarantee

TenantCore cannot guarantee:

• inbox placement
• recipient engagement
• list quality
• whether a recipient reports a message as spam
• the filtering behavior of Gmail, Microsoft, or another receiving provider
• the reputation impact of poor campaign content or targeting

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Authentication helps, but it is not enough

SPF, DKIM, and DMARC help receiving systems verify that mail is authorized and authenticated. They do not make unwanted mail wanted. A message can pass every authentication check and still be filtered because of poor sender reputation, bad list hygiene, or recipient behavior.

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Sending limits help, but they are not enough

Volume controls reduce the chance that one mailbox sends far more than intended. However, a small volume sent to a poor-quality list can still produce:

• hard bounces
• spam filtering
• negative reputation signals

TenantCore therefore separates send-limit enforcement from reputation monitoring.

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List quality matters

One of the strongest things an operator can control is the quality of the audience being contacted. Good operational practice includes:

• removing invalid addresses
• avoiding stale or scraped lists
• monitoring bounce patterns
• keeping targeting relevant
• pausing campaigns that show poor-quality signals
• treating sudden reputation changes as a reason to investigate, not simply increase volume

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Use TenantCore as the infrastructure signal layer

TenantCore is most useful when it gives you fast feedback that the infrastructure is changing or degrading. Use:

• Domains for authentication/readiness
• Mailboxes for usage and connection state
• Alerts for conditions that need attention
• Reports for historical infrastructure and reputation context

The objective is not to promise delivery. It is to make the infrastructure observable and controllable enough that problems can be detected and corrected earlier.