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Helper I
Helper I

Flow Connectors Files exchange


What I want to know is how Flow connectores exchange files between each other.

When an attachement is saved form Outlook to OneDrive how the information is sent?
How the Content attribute (dynamic value from attachement) is sent and received from Outlook to OneDrive.



I'm integrating flow with an app I've developed.

My app is a document management app (created by me) and one of the actions I want the connector to be able to do is get an attachement from a flagged email and add it to my personal storage using Microsoft FLow

(I'm using Visual Studio (asp.NET) and Azure ADD)




Community Support
Community Support

Hi Fvamaro,


Microsoft flow is based on Azure logic app, you could check this documentation to know more about how flow works:


About your scenario “get an attachment from a flagged email and add it to my personal storage”, which personal storage are you using?


Currently, the available connectors for Microsoft Flow are:


Using these connectors, you can really expand your on-premises and cloud applications to do different things with data that you create, and data you already have.


Best regards,
Mabel Mao

Community Support Team _ Mabel Mao
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

Hi @v-yamao-msft,


The main point of my question it's how to integrate a custom app with Microsoft flow and manipulate files with a custom connector between my app and the connectors already available.


I've seen the Flow documentation and the Azure Logic app and I could not find what I'm looking for.

I found this for example where it says that the content of an attachment is byte type, but my question is if it is a byte array, a string(64base) of bytes?


I want to know how my app can receive/send/save files integrated with microsoft flow connectors.


Best Regards, 

Filipe Amaro


If you want to know more information about my project check tue printscreens I left in the responses :

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