Interface Swift_Spool

Interface for spools.

Package: Swift
Author: Fabien Potencier
Located at classes/swiftmailer/lib/classes/Swift/Spool.php

Methods summary
`public`	# `start( )` Starts this Spool mechanism. Starts this Spool mechanism.
`public`	# `stop( )` Stops this Spool mechanism. Stops this Spool mechanism.
`public boolean`	# `isStarted( )` Tests if this Spool mechanism has started. Tests if this Spool mechanism has started. Returns boolean
`public boolean`	# `queueMessage( Swift_Mime_Message $message )` Queues a message. Queues a message. Parameters `$message` The message to store Returns boolean Whether the operation has succeeded
`public integer`	# `flushQueue( Swift_Transport $transport, string[] & $failedRecipients = null )` Sends messages using the given transport instance. Sends messages using the given transport instance. Parameters `$transport` A transport instance `$failedRecipients` $failedRecipients An array of failures by-reference Returns integer The number of sent emails