Backgrounds

Body background

The email body's background color and image are edited in the inspector's Body tab (settings.backgroundColor / settings.backgroundImage). It's the background shown behind the entire document.

Row and column background

Rows are transparent by default so the body background shows through. Each row and each column can have its own background color and image, independent of the body.

For a row background image:

• url — the image.
• repeat — no-repeat / repeat / repeat-x / repeat-y.
• size — auto (natural size, not stretched), cover (fills the container, may crop), or contain (fits entirely, may leave bands).
• position — standard CSS position (e.g. center, top center).
• Container width — "Content" (bounded to the body's contentWidth, centered) or "Full width" (bleeds to the email's edges, independent of content width).

Importing from Unlayer

When importing an Unlayer template, size almost never arrives as a CSS keyword — Unlayer puts the file's byte size there instead. The importer detects this and falls back to auto (natural size), the same thing Unlayer itself exports when it doesn't send an explicit background-size.

Outlook

Row background support in Outlook desktop is partial — see Email compatibility.