TimothyBlynJacobs 6fc14a44cf Mail: Support inline attachments. ...

MIME allows for referencing included attachments by their `Content-ID` header using the `cid` URL scheme. This can be used to embed images inline to the HTML message. For example, `<img src="cid:logo">`, will display the contents of message part with the `Content-Id: <logo>` header.

The `wp_mail()` function now supports including inline attachments through a new `$embeds` parameter. It accepts a map of `Content-ID` values to file paths. The `wp_mail_embed_args` filter can be used to customize the resulting `PHPMailer::addEmbeddedImage` method call.

Props jesin, swissspidy, chrisvendiadvertisingcom, SirLouen, mukesh27, yashjawale, iamadisingh.
Fixes #28059.

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git-svn-id: http://core.svn.wordpress.org/trunk@60034 1a063a9b-81f0-0310-95a4-ce76da25c4cd

2025-09-01 04:04:29 +00:00

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