(PECL mailparse >= 0.9.0) Streams data from source file pointer, apply encoding and write to destfp

(PHP 4 >= 4.0.7, PECL vpopmail >= 0.2) Deletes all virtual aliases of a user

(PHP 4, PHP 5, PHP 7) Gets the number of messages in the current mailbox

(PHP 4, PHP 5, PHP 7) Check current mailbox object

(PHP 4 >= 4.0.5, PECL vpopmail >= 0.2) Delete a virtual domain

(PHP 4 >= 4.0.7, PECL vpopmail >= 0.2) Deletes all virtual aliases of a domain

(PHP 4 >= 4.0.5, PECL vpopmail >= 0.2) Sets a virtual user's quota

(PHP 4, PHP 5, PHP 7) Converts ISO-8859-1 string to modified UTF-7 text

(PHP 4, PHP 5, PHP 7) Read the structure of a specified body section of a specific message

(PECL mailparse >= 0.9.0) Frees a MIME resource