Property height

The height property is used inside spacer blocks to configure how much whitespace it should represent, this will default to 50px.

    "from" : "",
    "subject" : "Email with a single spacer",
    "content" : {
        "blocks" : [ {
            "type": "spacer",
            "height": 50
        } ]

For more information and more examples, please check the documentation of spacer blocks.

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You can find this documentation page on GitHub.
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