Create SharePoint File from Outlook Attachment Not Readable

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Posted on by AnonPowerUser12

Hello Community,

Pretty straight-forward flow I am creating:

- Check for new email matching Subject Text String

- Move Excel attachment into a SharePoint location

Is outputting a file that is not in any sort of format and when I've tried added ".xlsx" into the "File Name" field, it has just created a corrupted Excel file. Any help?

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Building flows

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ManishSolanki 15,091 Super User 2025 Season 2 on at

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Hi @AnonPowerUser12

Pls use "Get attachment" action inside "Apply to each" action. Pass the Message ID & attachment ID as input values.

In create file action, pass the file name & content as shown below:

If you still face the issue, then switch to classic designer & retest the flow.

If this helps & solves your problem, please remember to give a 👍 and accept my solution as it will help others in the future.

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AnonPowerUser12 6 on at

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It looks like it works when I follow your guide of naming the file "Name (Name of Attachment)" but not "Subject (Subject of Email)". Any idea why changing the file name would cause this to break?

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ManishSolanki 15,091 Super User 2025 Season 2 on at

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As attachment name contains the full name of the file with extension so passing name fixed the issue. The subject of an email does not contain file name & extension so it did not work.

If this helps & solves your problem, please remember to give a 👍 and accept my solution as it will help others in the future.

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AnonPowerUser12 6 on at

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Is there a way to name the file whatever I want (Custom Text, Subject, TimeStamp, etc.) and include the file extension to make it work?

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ManishSolanki 15,091 Super User 2025 Season 2 on at

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Hi,

Here is an example of setting file name by joining email subject & attachment extension. You need write an expression for join operation. Expression needs to be added in the 'Function' box as shown below:

concat(triggerOutputs()?['body/subject'],last(split(items('Apply_to_each')?['name'],'.')))

If this helps & solves your problem, please remember to give a 👍 and accept my solution as it will help others in the future.

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AnonPowerUser12 6 on at

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In your example above, would you put the name of the file where I've marked in bold?
concat(triggerOutputs()?['body/subject'],last(split(items('Apply_to_each')?['name'],'.')))
With or without the quotations?

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ManishSolanki 15,091 Super User 2025 Season 2 on at

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Hi,

Pls use the original expression without making any changes. It dynamically extracts file extension from its name and append to subject of an email to set file name as <emailsubject.attachmentextension>

If this helps & solves your problem, please remember to give a 👍 and accept my solution as it will help others in the future.

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