Filters whether to preempt sending an email.

Returning a non-null value will short-circuit wp_mail() , returning that value instead. A boolean return value should be used to indicate whether the email was successfully sent.

$return null|bool

Short-circuit return value.

$atts array

Array of the wp_mail() arguments.

• tostring|string[]
  Array or comma-separated list of email addresses to send message.
• subjectstring
  Email subject.
• messagestring
  Message contents.
• headersstring|string[]
  Additional headers.
• attachmentsstring|string[]
  Paths to files to attach.

File: wp-includes/pluggable.php. View all references

$pre_wp_mail = apply_filters( 'pre_wp_mail', null, $atts );