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How to Post Complete Email Bodies in Teams using Power Automate

Maira Mehtab Sep 20, 2026 869 views

Question details

The user needs to create a Power Automate flow that triggers based on specific email subject lines and posts the entire email body (including very long messages) into a Microsoft Teams chat.

Product: Power Automate, Microsoft Teams
Device & OS: not provided
Scenario: Automating the forwarding of long emails to Microsoft Teams channels or chats.
Observed behavior: The user is searching for a flow design that avoids truncation and successfully handles Teams message character limits for excessively long email bodies.

Before you start

Ensure you have active Power Automate and Microsoft Teams accounts with the necessary permissions to create, edit, and test custom workflow integrations.

Solution 1Recommended

Seek Expert Assistance in the Microsoft Power Platform Community

Since handling excessive message lengths in Teams involves advanced workflow design and API limitations, consulting the dedicated Power Platform community is the most effective approach.

Microsoft Teams has strict payload size limits for incoming messages (typically around 28 KB). When an email body exceeds this limit, standard Power Automate flows may fail or truncate the content.

Because custom workarounds—such as splitting messages into chunks, saving the email to OneDrive and posting a link, or using advanced Adaptive Cards—require complex logic, the official Power Automate experts are best equipped to provide specific workflow structures.

Navigate to the Power Platform Community

Open your web browser and visit the official Microsoft Power Platform Community forums at powerusers.microsoft.com.

Search for Existing Threads

Use the search bar to look for queries like 'Post long email body to Teams' or 'Bypass Teams message limits'. You will likely find existing flow templates shared by other users.

Post a Detailed Request

If no existing solution fits your needs, create a new post. Detail your exact requirement: triggering the flow via specific subject lines and the necessity to post the complete, untruncated email body to a Teams chat.

Community Support Advantages: Power Automate experts in the dedicated community can provide exact JSON payloads or step-by-step workflow actions to bypass Teams message character limits effectively.

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Frequently Asked Questions

Is there a character limit for Microsoft Teams messages sent via Power Automate?

Yes, Microsoft Teams imposes a message size limit (approximately 28 KB per message). If an email body exceeds this limit, the Power Automate flow may fail or truncate the message. To handle larger emails, users often post a summary with a link to the original email or break the text into multiple separate messages.

How do I filter incoming emails by subject line in Power Automate?

In the 'When a new email arrives (V3)' trigger, click on 'Show advanced options' and locate the 'Subject Filter' field. Enter the specific keywords you want to target. The flow will then only trigger when an incoming email's subject contains that exact text.

Can I post an email as an Adaptive Card in Teams?

Yes, you can use the 'Post adaptive card in a chat or channel' action in Power Automate. This allows you to format the email content neatly within Teams, although it is still subject to the standard Teams payload size limits.

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