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Email - This message has HTML content which is too large

Posted on by 45

Hi

Attempting do a Test Send of a Marketing Email using a new Email Template we've been working on results in this error:

HTML: This message has HTML content which is too large.

pastedimage1567120244419v1.png

Is there any way to know what "too large" is? Is it the size of the email? Length (or amount) of HTML Markup?

Can we adjust the limit?

Thanks.

  • Suggested answer
    tonyamazing Profile Picture
    tonyamazing 45 on at
    RE: Email - This message has HTML content which is too large

    Thanks for the replies.

    We've made attempts to mitigate this error by minifying our HTML, separating our CSS to external sources, and simply reducing the content of our emails.

    If we need to have longer emails, we'll attempt to refactor our HTML Templates to meet the size limitations.

    Cheers.

    Tony.

  • Verified answer
    Karl Maybach Profile Picture
    Karl Maybach on at
    RE: Email - This message has HTML content which is too large

    Hi,

    This limit is documented here (in the box marked "important"): docs.microsoft.com/.../email-design

  • Verified answer
    LuHao Profile Picture
    LuHao 40,872 on at
    RE: Email - This message has HTML content which is too large

    Hi tony,

    I tested in my environment and have found 2 scenarios that will throw such error.

    1. Text content is large than 100 KB.
    2. An image is embedded on page with base64 code directly on marketing email page and the base64 code is lager than 100 KB.

    Anyway, the size of marketing email is limited under 100 KB, you can find the note here:

    https://docs.microsoft.com/en-us/dynamics365/customer-engagement/marketing/email-design#design-your-content

    7510.jpg

    So to avoid our emails being flagged as spam or truncated, the text size is restricted to be set to larger.

    But referenced image content is not restricted. 

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