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Image (jpg, png, ect)
Renders the image in the template
Other assets but only as a downloadable links
Not Supported
How it works:
First go to Content Builder and either create or edit an email template.
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Selecting other Assets (as downloadable link/button)
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Replacing Assets
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After an image was replaced, salesforce require some short time (around 5 minutes) it to be updated, so usually we wont see the changes at once. But as soon it is updated, we can see the changes with MC Connector.
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Testing
During testing the solution the situation with not existing source might arise. It is not customer issue and could be easily fixed by clearing cache
Issue with non accessible url:
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Clearing the cache:
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