Overview
Need to poll emails from your Exchange server? This smart service can be used in a poller process and extract the data from the Microsoft Exchange server. Messages are stored in the Appian Document System, as well as the attachments. Meta data is stored in a database table for further processing.
This plug-in provides an alternative to sending emails to an Appian process model when inbound email integration is requested. Instead of the email being forwarded to Appian, this plug-in reads the emails directly from the Exchange mailbox using the MS Graph API as described below:
Key Features & Functionality
Hi Community,
We’re facing an issue with the MS Graph Mail Poller smart service in Appian. When the process executes, it fails with the error:
An error occurred in executing an Activity Class Node Name: MS Graph Mail Poller
We've confirmed the connected system credentials are correct, and the token is valid. However, the node consistently fails without detailed explanation.
Things we've already checked:
Input parameters like mailbox/folder are populated correctly.
Connected System connection test is successful.
Plugin version might be outdated(Current version - 4.2.6) , but we’re unsure if that’s the root cause.
No custom error message or stack trace from the node itself — just a generic execution error.
Has anyone else encountered this issue? Is this likely due to plugin incompatibility, or is there a specific known limitation or fix for this error?
Any guidance or troubleshooting steps would be appreciated.
Thanks in advance!
If you're using Appian 25.2, there's a known library incompatibility that's resolved in the latest version. You can also try the following steps:
Remove the plugin from the Admin Console.
Reinstall the plugin.
Delete and recreate the smart service