Pieter Nys

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    Pieter Nys supported this idea  · 
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    Dear Microsoft Graph developer,

    We are excited to announce that this feature is now available via Microsoft Graph beta endpoint for you to try. You can find more details on the release @ https://developer.microsoft.com/en-us/office/blogs/attaching-large-files-to-outlook-messages-in-microsoft-graph-preview/

    Please keep sharing your feedback, feature requests via the UserVoice forum.

    Thanks
    Sivaprakash Saripalli
    Senior Program Manager
    Microsoft Graph

    Pieter Nys commented  · 

    Hey @Sivaprakash Saripalli, @vsaripal,

    Thanks for getting back to me about the configurable upper limit of message-size. I still need to test this out with my exchange administrator to test this further.

    I've ran in another issue with this. I am not able to upload attachments of 3.1MB.

    When using the old way of sending a post-request to '/v1.0/me/messages/ID/attachments', I get an http-response with statuscode 500. I guess because my total request size is around 4.1MB and the maximum is 4MB.

    When using the new way of creating an upload-session, I get an error-response with the message 'ErrorAttachmentSizeShouldNotBeLessThanMinimumSize'.

    This leaves me with no way of attaching an file with size 3.1MB.

    I uploaded a log of my requests and the attachment-file used to https://we.tl/t-w5ujFLARdR .

    Could you take a look?

    Pieter Nys commented  · 

    As I was very excited to try out this new feature, I immediately started working on it this morning.

    I was able to upload larger files using this new method, however I was absolutely not able to attach an attachment of 150 MB.

    When trying to upload an attachment of 30+ MB or a set of attachments totalling more than 30MB, I received a response with header 400, code "ErrorMessageSizeExceeded" and message "The message exceeds the maximum supported size.".

    I'm still very pleased with the possibility of adding larger attachments, however saying the new limit is 150MB is not correct.

    @Sivaprakash Saripalli, @vsaripal, is there anything we need to change on the configuration of our mailbox/office 365 so we can send larger emails?

    Pieter Nys supported this idea  · 

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