--- title: "Microsoft 365 integration overview (change request)" slug: "change-request-office-365-integration-with-opensense" description: "The six Microsoft 365 elements an Opensense integration needs: outbound and inbound connectors, three transport rules, and DNS entries. Plus disabling RTF." updated: 2025-10-02T18:45:28.000Z canonical: "https://help.opensense.com/docs/change-request-office-365-integration-with-opensense" --- > ## Documentation Index > Fetch the complete documentation index at: https://help.opensense.com/llms.txt > Use this file to discover all available pages before exploring further. # Microsoft 365 integration overview (change request) ## Overview This article is a high-level overview of how Opensense integrates with Microsoft 365 for consistent, branded email signatures across your organization. The setup follows [Microsoft's best practices for email signature infrastructure and configuration](https://learn.microsoft.com/en-us/exchange/mail-flow-best-practices/use-connectors-to-configure-mail-flow/integrate-office-365-with-an-email-add-on-service), using connectors, rules, and DNS updates. For how signatures flow through Opensense, see [How does Opensense work with Microsoft 365?](https://help.opensense.com/docs/how-does-opensense-work-with-office-365) :::caution[Not a step-by-step guide] Work with your dedicated Implementation Engineer, or contact [help@opensense.com](mailto:help@opensense.com), to complete the integration. ::: ## Integration components The integration of Opensense with your Microsoft 365 (O365) message environment requires six elements: 1. Connector: Opensense Outbound Connector 2. Connector: Opensense Inbound Connector 3. Rule: Exclude Calendar 4. Rule: Enable Opensense 5. Rule: Opensense Stamping 6. DNS entries update ### Connectors
Setting Opensense Outbound Connector Opensense Inbound Connector
From Office 365 Your organization's email server
To Your organization's email server Office 365
Used only when A transport rule redirects messages to the connector Not listed
Routing To the Opensense API endpoint office365-api.sendergen.com Not listed
Certificate Connects through TLS, with a certificate from a trusted certificate authority (CA) Identified by a certificate signed from the *.sendergen.com domain
### Transport rules A dash means that no exception is listed for that rule.
Rule Exclude Calendar Enable Opensense Opensense Stamping
Rule name Opensense Exclude Calendar Enable Opensense Opensense Stamping
Sent from inside the organizationApplies when Yes Yes Yes
From your domainsApplies when Yes Yes Yes
Also requiresApplies when The message type is Calendaring The subject or body contains the Opensense token [[#]] The sender is a member of a group (at first, a distribution list or a mail-enabled security group)
Effect Sets a message header, so that no signature is placed on calendar messages Uses the Opensense Outbound Connector Applies the Opensense plain-text signature through the disclaimer feature, and adds an Opensense message header to show that the stamping rule applied a signature
Confirms the sender address matches the envelope sender Yes Yes Yes
Automatic repliesException Not listed Yes Yes
Emails with a header value that Opensense appliesException Not listed Yes, to avoid duplicate signatures Yes
Non-customer or non-routable domainsException Not listed Yes Yes
## Disabling Rich Text Format (RTF) Emails sent in Rich Text Format (RTF) do not support HTML rendering, which interferes with how Opensense signatures display. RTF strips or breaks HTML signatures. To keep signatures formatted and on brand on all devices and mail clients, disable RTF in the Exchange mail flow settings. See [Why do we set use RTF to never in Exchange Online?](https://help.opensense.com/docs/why-do-we-set-use-rtf-to-never-in-exchange-online) ## Updating DNS entries Opensense customers must update the required DNS entries in both external and internal DNS, if applicable. This keeps your brand consistent and improves deliverability. See [Required DNS settings for Opensense](https://help.opensense.com/docs/dns-entries-must-have). ## What's next - [How does Opensense work with Microsoft 365?](https://help.opensense.com/docs/how-does-opensense-work-with-office-365): how email flows through Opensense. - [Required DNS settings for Opensense](https://help.opensense.com/docs/dns-entries-must-have): the DNS entries to add. - [Choosing a deployment method](https://help.opensense.com/docs/choose-a-deployment-method): Stamping, Plain Text Block, and the other methods.