symfony/SwiftmailerBundle — pull request #50 by snc (2013-08-10 10:50:23+00:00)
Title: Added new spool type "service" to allow custom spool implementations

This PR makes it possible to use custom spool implementations.

```
swiftmailer:
spool:
type: service
id: swiftmailer.spool.redis
```

If the implementation is OK for you I will update the tests ;-)