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Does CSS shape-outside Work in HTML Email?

Defines a shape, which may be non-rectangular, around which adjacent inline content should wrap.

Quick Answer

Does shape-outside work in HTML email?

The CSS shape-outside property is supported in Outlook (Mac / Web), Apple Mail, Samsung Email, Thunderbird. It is NOT supported in Gmail, Outlook (Windows), Yahoo! Mail. Always include a safe fallback for unsupported clients.

Which Email Clients Support CSS shape-outside?

CSS support for shape-outside across email clients

Email ClientDesktopMobile / WebNotes
Gmail✗ No✗ No—
Outlook (Windows)✗ No?—
Outlook (Mac / Web)✓ Yes✗ No—
Apple Mail✓ Yes✓ Yes—
Yahoo! Mail✗ No✗ No—
Samsung Email?✓ Yes—
Thunderbird✓ Yes?—
ProtonMail??—
Fastmail??—

Frequently Asked Questions

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Paste your HTML and see how it renders in clients that don't support
shape-outside.

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Building a new email instead of checking an existing one? MailViewr's Email Builder only lets you use CSS that's known to render across clients, so shape-outside can't sneak into your markup by accident. Open the Email Builder →