Here are the steps to follow to receive the investigation summary directly into MS Teams:

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Step 1:

Create a webhook in your specific channel where you want to receive notifications. You can use this documentation by MS Teams as a reference on how to create webhooks.

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Step 2:

Select MS Teams as notification channel while setting up Workflow.

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Note:

MS Teams supports publishing of links and images currently using webhooks. It is not possible to send csv or txt files so you will receive the respective links for CSV & TXT files instead so you can open them and check it instantly.