AMPscript can be used to retrieve external content, such as an RSS feed, dynamically at send time using HTTPGet().

External Content blocks in Content Builder allow you to bring in an RSS feed URL directly into an email design without writing custom AMPscript.

Dynamic Content and Personalization Strings are based on internal data extensions or profile attributes, not pulling from external real-time sources.

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Exact Extracts from Salesforce Documentation:

Source: Salesforce Help – External Content Blocks

→ "Use an External Content block to retrieve and display data from an external source, such as an RSS feed, at send time."

Source: Salesforce Help – AMPscript HTTP Functions

→ "Use the HTTPGet() AMPscript function to retrieve information from an external URL and display it in a message."

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