Custom components are UI elements you build or provide to extend an editor’s interface or content model. In an email editor context, custom components can power specialized blocks, custom side panels, configuration dialogs, or product-specific content modules that go beyond the default toolkit.
Where Custom Components Show Up
Most editors are built from composable parts. A custom component might be a settings panel, a block renderer, or an integration widget. These elements often map to a broader UI component approach inside your product, where the editor shares patterns with your application UI. In front-end ecosystems, teams commonly implement custom components as a react component or a vue component depending on their stack.
Keeping Components Safe for Email Output
When components generate HTML, keep styling rules simple and predictable. Avoid relying on advanced selectors or runtime scripts, and verify rendering in representative clients. If a component controls a CTA, validate tap target size and spacing so it remains usable on mobile.
A UI component is not automatically safe for email. Custom components must ultimately produce output that renders reliably in inboxes. That means conservative markup, predictable styling, and careful validation. When custom components are used to define new blocks, they usually connect directly to custom blocks so the user experience and the output remain aligned.
DX and Long-Term Maintenance
Custom components are a developer experience decision. They can reduce time to deliver features, but they also create a maintenance surface area. Document inputs and defaults, version your component contracts, and build test fixtures so you can validate output during upgrades and CI runs.
Custom Components and Topol
Topol helps teams extend an embedded editor with custom components and blocks while keeping output predictable, making it easier to ship editor features that fit real product needs. Learn more at Topol or create an account at Topol signup.