Purpose

Implements Post by Email: pulls messages from a configured POP3 mailbox and turns them into posts.

Flow

• Loads WordPress and checks enable_post_by_email_configuration filter.
• Validates mailserver settings and rate-limits execution.
• Connects to the POP3 mailbox and iterates messages.
• Parses headers/body, maps sender to a user, builds post data.
• Inserts post via wp_insert_post() and deletes the processed email.

Key functions called

• get_option() / set_transient() / get_transient()
• wp_set_current_user( 0 )
• wp_insert_post()
• xmlrpc_getposttitle()

Hooks fired

• Actions:
  • wp-mail.php (custom action name)
  • publish_phone
• Filters:
  • enable_post_by_email_configuration
  • wp_mail_original_content
  • phone_content