HTML Elements

<link>

HTML element · 4 supported, 0 partial, 11 unsupported across 15 clients

Client Support

Client	Category	Engine	Support
Gmail	webmail	Gmail Web	Unsupported
Gmail Android	mobile	Gmail Mobile	Unsupported
Gmail iOS	mobile	Gmail Mobile	Unsupported
Outlook 365	webmail	Outlook Web	Unsupported
Outlook (New)	desktop	Outlook Web	Supported
Outlook Classic	desktop	Microsoft Word	Supported
Outlook iOS	mobile	Outlook Mobile	Unsupported
Outlook Android	mobile	Outlook Mobile	Unsupported
Apple Mail	desktop	WebKit	Supported
Apple Mail iOS	mobile	WebKit	Supported
Yahoo Mail	webmail	Yahoo	Unsupported
Samsung Mail	mobile	Samsung	Unsupported
Thunderbird	desktop	Gecko	Unsupported
HEY Mail	webmail	WebKit	Unsupported
Superhuman	desktop	Blink	Unsupported

Client-by-client behaviour for <link>

Fully supports <link> (4): Outlook (New), Outlook Classic, Apple Mail, Apple Mail iOS.

No support (11): Gmail, Gmail Android, Gmail iOS, Outlook 365, Outlook iOS, Outlook Android, Yahoo Mail, Samsung Mail, Thunderbird, HEY Mail, Superhuman. Plan fallbacks for these clients before relying on <link> in production sends.

Fixes & Workarounds

Gmail

Unsupported

Inline all CSS directly in the HTML.

Before

<head>
  <link rel="stylesheet" href="styles.css" />
</head>

After

<head>
  <style>
    /* Paste your CSS here, or use a build tool like
       juice/inline-css to inline automatically */
    .container { max-width: 600px; margin: 0 auto; }
    .header { background-color: #6d28d9; padding: 32px; }
  </style>
</head>

Inline all CSS instead of using external stylesheets

Gmail Android

Unsupported

Inline all CSS directly in the HTML.

Before

<head>
  <link rel="stylesheet" href="styles.css" />
</head>

After

<head>
  <style>
    /* Paste your CSS here, or use a build tool like
       juice/inline-css to inline automatically */
    .container { max-width: 600px; margin: 0 auto; }
    .header { background-color: #6d28d9; padding: 32px; }
  </style>
</head>

Inline all CSS instead of using external stylesheets

Gmail iOS

Unsupported

Inline all CSS directly in the HTML.

Before

<head>
  <link rel="stylesheet" href="styles.css" />
</head>

After

<head>
  <style>
    /* Paste your CSS here, or use a build tool like
       juice/inline-css to inline automatically */
    .container { max-width: 600px; margin: 0 auto; }
    .header { background-color: #6d28d9; padding: 32px; }
  </style>
</head>

Inline all CSS instead of using external stylesheets

Outlook 365

Unsupported

Inline all CSS directly in the HTML.

Before

<head>
  <link rel="stylesheet" href="styles.css" />
</head>

After

<head>
  <style>
    /* Paste your CSS here, or use a build tool like
       juice/inline-css to inline automatically */
    .container { max-width: 600px; margin: 0 auto; }
    .header { background-color: #6d28d9; padding: 32px; }
  </style>
</head>

Inline all CSS instead of using external stylesheets

Outlook iOS

Unsupported

Inline all CSS directly in the HTML.

Before

<head>
  <link rel="stylesheet" href="styles.css" />
</head>

After

<head>
  <style>
    /* Paste your CSS here, or use a build tool like
       juice/inline-css to inline automatically */
    .container { max-width: 600px; margin: 0 auto; }
    .header { background-color: #6d28d9; padding: 32px; }
  </style>
</head>

Inline all CSS instead of using external stylesheets

Outlook Android

Unsupported

Inline all CSS directly in the HTML.

Before

<head>
  <link rel="stylesheet" href="styles.css" />
</head>

After

<head>
  <style>
    /* Paste your CSS here, or use a build tool like
       juice/inline-css to inline automatically */
    .container { max-width: 600px; margin: 0 auto; }
    .header { background-color: #6d28d9; padding: 32px; }
  </style>
</head>

Inline all CSS instead of using external stylesheets

Yahoo Mail

Unsupported

Inline all CSS directly in the HTML.

Before

<head>
  <link rel="stylesheet" href="styles.css" />
</head>

After

<head>
  <style>
    /* Paste your CSS here, or use a build tool like
       juice/inline-css to inline automatically */
    .container { max-width: 600px; margin: 0 auto; }
    .header { background-color: #6d28d9; padding: 32px; }
  </style>
</head>

Inline all CSS instead of using external stylesheets

Samsung Mail

Unsupported

Inline all CSS directly in the HTML.

Before

<head>
  <link rel="stylesheet" href="styles.css" />
</head>

After

<head>
  <style>
    /* Paste your CSS here, or use a build tool like
       juice/inline-css to inline automatically */
    .container { max-width: 600px; margin: 0 auto; }
    .header { background-color: #6d28d9; padding: 32px; }
  </style>
</head>

Inline all CSS instead of using external stylesheets

Thunderbird

Unsupported

Inline all CSS directly in the HTML.

Before

<head>
  <link rel="stylesheet" href="styles.css" />
</head>

After

<head>
  <style>
    /* Paste your CSS here, or use a build tool like
       juice/inline-css to inline automatically */
    .container { max-width: 600px; margin: 0 auto; }
    .header { background-color: #6d28d9; padding: 32px; }
  </style>
</head>

Inline all CSS instead of using external stylesheets

HEY Mail

Unsupported

Inline all CSS directly in the HTML.

Before

<head>
  <link rel="stylesheet" href="styles.css" />
</head>

After

<head>
  <style>
    /* Paste your CSS here, or use a build tool like
       juice/inline-css to inline automatically */
    .container { max-width: 600px; margin: 0 auto; }
    .header { background-color: #6d28d9; padding: 32px; }
  </style>
</head>

Inline all CSS instead of using external stylesheets

Superhuman

Unsupported

Inline all CSS directly in the HTML.

Before

<head>
  <link rel="stylesheet" href="styles.css" />
</head>

After

<head>
  <style>
    /* Paste your CSS here, or use a build tool like
       juice/inline-css to inline automatically */
    .container { max-width: 600px; margin: 0 auto; }
    .header { background-color: #6d28d9; padding: 32px; }
  </style>
</head>

Inline all CSS instead of using external stylesheets

Production guidance for <link>

When in doubt, ship a baseline that renders without <link> and treat it as progressive enhancement on clients where support is verified. Emailens automatically detects cross-client divergence on this feature when you preview an email, so you can see exactly which template paths break before a campaign goes out.

Related Features

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Support data last updated Apr 27, 2026 · synced from caniemail.com via @emailens/engine.