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Push A-Mail Attachment to Nextcloud, base64 decoded

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Posted on by fab_mue

I am trying to build a flow that pushes every attachment received from a specific mailbox to a specific folder in our Nextcloud.

So far I got the flow to take any e-mail attachment and push it to the Nextcloud. (This works via http put to the WebDAV Endpoint of the Nextcloud) The only Problems: The Files pushed to the nextcloud are base64-encoded and so can't be read by anyone using the cloud.

There are the functions

decodeBase64()

base64ToBinary()

within the functions for flows. The only problem: I can't get the Attachments to be pushed trough that function before pushing it to our cloud. When I enter those functions as dynamic content it's only offering me mail text, mail from eg. but not the actual mail attachment.

Any suggestions? Thanks in advance!

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Building flows

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v-yuazh-msft Microsoft Employee on at

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Hi @ fab_mue,

Could you please share a screenshot of your flow's configuration?

I would work on it to figure out a way to solve your questions.

Regards,

Alice Zhang

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fab_mue 4 on at

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Hi Alice, thanks for your reply!
Here's a screenshot. Would be cool if you have an idea! Thanks in advance Fabian

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v-xida-msft Microsoft Employee on at

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Hi @fab_mue,

I have made a test on my side and please take a try with the following workaround:

Within Body field of "HTTP" action, type the following formula:

base64ToBinary(items('Apply_to_each')?['ContentBytes'])

The flow works successfully as below:

The file opens well as below:

Best regards,

Kris

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fab_mue 4 on at

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Hey Kris,

thanks for your reply!

Sadly that did not work. Template validation fails with the following message:

The template validation failed: 'The repetition action(s) 'Apply_to_each' referenced by 'inputs' in action 'HTTP' are not defined in the template.'.
It sais that the Apply_to_each is not defined. Do I have to define it somewhere then?

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