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Cloud imports into a brain

You can bring files and e-mails from Google Drive, Microsoft 365 and Outlook into a brain. Custodos makes a copy and checks the source for changes at regular intervals. This page covers the requirements, the three providers and the limits of an import.

Last checked on 28 September 2026

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Requirements

A cloud import needs two things: the right to edit the brain, and a connected account with the provider. The connection belongs to your Custodos account. Colleagues do not see it and cannot import through your account.

You connect an account under Connected accounts in your Account settings, or straight from the Add sources menu. Where it says connect… next to a provider, one click starts the sign-in with that provider. More under Connected accounts.

The three providers compared

The import only reads. Custodos changes nothing in your files or e-mails in the process. Every imported file goes through the same processing and the same data protection check as an upload, with a limit of 20 MB per file. Unlike an upload, a cloud import accepts no images, and Custodos refuses a PDF from which no text can be read.

ProviderWhat can be importedSelectionWhat Custodos can see
Google DriveFiles from your drive and from shared drives. Google Docs and Slides arrive as text, Google Sheets as an Excel file.one or more files in Google's file dialog, no foldersonly the files you pick in the file dialog
Microsoft 365PDF, Word, Excel, PowerPoint and text files from OneDrive and SharePointone file per importwhatever your Microsoft account can already open
Outlook (mail & calendar)the text of an e-mail or single attachmentsone e-mail or one attachment per importyour mailbox, read-only for the import

Importing from Google Drive

  1. 1

    Open the picker

    In the brain, click Add sources, then Google Drive. Google's file dialog opens.
  2. 2

    Select files

    Select one or more files and confirm. Folders cannot be selected.
  3. 3

    Processing

    Custodos fetches the files and processes them like an upload. The brain does not accept images from Google Drive.

Importing from Microsoft 365

  1. 1

    Open the file browser

    Click Add sources, then Microsoft 365. Choose a file from Microsoft 365 opens.
  2. 2

    Choose a location

    Under Locations choose OneDrive or a SharePoint site and open the folders down to the file you want.
  3. 3

    Import the file

    Click the file. Custodos marks files that cannot be imported with Only PDF, Word, Excel, PowerPoint and text files up to 20 MB can be imported.

Importing e-mails from Outlook

The Outlook connection is separate from the Microsoft 365 one and is granted on its own. What Outlook can do in chat is described under Outlook.

  1. 1

    Open the mailbox

    Click Add sources, then Outlook (mail & calendar). Import an e-mail from Outlook opens.
  2. 2

    Find the e-mail

    Search by sender, subject or content and press Enter.
  3. 3

    Import

    Import message text brings in the text of the e-mail. Under Attachments you choose single attachments. The brain does not accept images from attachments.

A copy with regular checks

An imported document is a copy. At regular intervals, each time no sooner than 20 hours after the last check, Custodos checks whether a file from Google Drive or Microsoft 365 has changed at its source. If it has, Custodos takes the new version and processes it again. You can trigger this straight away from the document's menu with Refresh from source.

The check always runs with the account of the person who imported the file. Custodos does not re-check Outlook e-mails, because a received e-mail no longer changes.

MessageMeaning
The source is unchanged.The document in the brain is up to date.
The source has changed – the document is being reprocessed.Custodos takes the new version.
The source is no longer reachable – the previous version is kept.The file was deleted or moved, or access was withdrawn.
The cloud storage connection is missing – please reconnect it on your account page.The importing person's account is disconnected.
The updated source contains blocked data – the previous version is kept.The brain is set to Strict and the new version contains a protected identifier.

What a cloud import is not

A cloud import is not an ongoing synchronisation. Custodos takes single files, not whole folders. New files at the source do not reach the brain on their own.

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