symfony/symfony-docs — pull request #1672 by Sgoettschkes (2012-08-31 07:38:16+00:00)
Title: Adding a description of the swiftmailer spooling type "memory"

As mentioned in issue #1671, symfony 2.1 adds a second type to swiftmailer spooling called "memory".
I added a description about this type as well as configuration examples.