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HTML Blocks

HTML blocks let you drop custom email-safe HTML directly into the block editor without switching the whole email into full-code mode. Use them when you need a hand-built snippet that is easier to paste as code than recreate with standard blocks.

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What HTML Blocks Are For

  • Embedding a custom promo banner or card layout
  • Reusing a snippet from another email system
  • Adding markup that is too specific for the standard block library
  • Mixing custom HTML with regular Sequenzy blocks in the same email

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How To Use Them

  1. Open the component panel or type /html
  2. Insert the HTML block
  3. Paste your snippet into the inline code editor
  4. Review the live preview on the canvas
  5. Send a test email before publishing

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What Works Inside The Block

  • Inline CSS styles
  • Table-based email layouts
  • Merge tags like {{FIRST_NAME}}, {{EMAIL}}, and {{unsubscribeUrl}}
  • Links that still go through Sequenzy’s normal email rendering pipeline

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Best Practices

  • Prefer email-safe HTML with inline styles
  • Use tables for complex layouts when broad email-client support matters
  • Keep the block focused on a snippet, not an entire email document
  • Test in real inboxes if you rely on advanced HTML or unusual spacing

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HTML Block vs Full HTML Email

  • Use an HTML block when you want one custom section inside a larger block-based email
  • Use Sequenzy’s full HTML import/editor flow when the entire email should be managed as HTML

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Limitations

  • HTML blocks are best for snippets, not full standalone HTML documents
  • Email clients still have their usual limitations, so browser-only markup may not render as expected
  • Scripts are not a valid email pattern and should not be part of your email HTML