Available from version 1.27.0 (Gerrit change 242791)
Allow transformation of content, such as encrypting/signing
Define function:
public static function onUserMailerTransformContent( array $to, MailAddress $from, &$body, &$error ) { ... }
Attach hook: In extension.json:
	"Hooks": {
		"UserMailerTransformContent": "MediaWiki\\Extension\\MyExtension\\Hooks::onUserMailerTransformContent"
Called from: File(s): UserMailer.php
Interface: UserMailerTransformContentHook.php

For more information about attaching hooks, see Manual:Hooks .
For examples of extensions using this hook, see Category:UserMailerTransformContent extensions.

If returning false, the mail is not sent.

Details edit

  • $to: array of MailAdress objects of the targets
  • $from: MailAddress of the sender
  • &$body: email body, either a string (for plaintext emails) or an array with 'text' and 'html' keys
  • &$error: should be set to an error message string, by default false

See also edit