[wp-trac] [WordPress Trac] #42133: Add filter to emails sent by wp_new_blog_notification()

[WordPress Trac]

#42133: Add filter to emails sent by wp_new_blog_notification()
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 Reporter:  johnbillion      |      Owner:
     Type:  enhancement      |     Status:  new
 Priority:  normal           |  Milestone:  Future Release
Component:  Upgrade/Install  |    Version:  2.1
 Severity:  normal           |   Keywords:  needs-patch good-first-bug
  Focuses:  multisite        |
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 `wp_new_blog_notification()` contains a call to `wp_mail()` which sends an
 email when WordPress is first installed, and when a site is added to a
 Multisite network.
 ([https://core.trac.wordpress.org/browser/tags/4.8.2/src/wp-
 admin/includes/upgrade.php?marks=376-399#L361 Ref]).

 The contents of the email cannot be filtered. The recipient, subject,
 message, and headers should be passed through a filter in the same format
 as the `password_change_email ` filter.
 ([https://core.trac.wordpress.org/browser/tags/4.8.2/src/wp-
 includes/user.php?marks=1842-1864#L1818 Ref]).

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Ticket URL: <https://core.trac.wordpress.org/ticket/42133>
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