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Dynamics 365 Community / Forums / Customer experience | Sales, Customer Insights,... / Dynamics 365 Email ima...
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Dynamics 365 Email image attachment performance

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Posted on by Gogo Muljawan

Hello,

We experienced an email loading time issue that is different from each mail providers. We already tried to optimize the image (under 5MB), but the performance still not optimal. We have some questions regarding the email image attachment backend process in Dynamics 365 Marketing :

  1. Are the images/video of marketing email via D365 is actually stored in D365 Azure environment underlying?
    Are the images embedded to the email, or will be downloaded from another storage in Azure/D365 Marketing?

  2. No matter which email service provider customer is using, client device will download the image/video via image links from D365 Marketing storage server, right? To improve email loading time, should we focus on the image download speed instead of the email loading speed?
  3. Is there any authentication mechanism while customers download media files from D365 storage (e.g. blob)? or it is publicly available? Any difference in this space between different email service provider?
    1. Outlook email -> customer device -> auth -> D365 (image)
    2. Gmail -> customer device -> auth -> D365 (image)
  4. Is there a CDN (Content Delivery Network) service enabled on top of D365 Marketing? i.e. caching the images/video in network level. Can we enable Azure CDN to speed up the content loading?

Thank you,

Gogo

  • Suggested answer
    Tereza Kirk Profile Picture
    Tereza Kirk on at
    RE: Dynamics 365 Email image attachment performance

    Thank you for your question. The recommended size of image asset for optimal performance is less than 1MB. Performance is a complex topic that is dependant also on the internet connection of the end recipient, the type of device and more.

    Overall, assets are stored in either Azure Blob Storage or Dataverse (based on number of conditions) and served using CDN for the best performance. The end recipient will then be able to access the image via image links that are generated and given these are served using CDN, they are publicly available and no authentication mechanism is needed.

    If you need any further help, please reach out to us via support.

    Thanks,

    Tereza Kirk

    PM for Dynamics 365 Marketing

  • Nya Profile Picture
    Nya 29,056 on at
    RE: Dynamics 365 Email image attachment performance

    Hi Gogo,

    Do you mean the images and videos which has already been inserted into a marketing email?

    The images in Files are stored in dataverse (msdyncrm_file entity).

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