By default, the symfony mail delivery strategy is set to none. That means, that calling send method upon sfMailer object will perform no action.
Configuring mail delivery_strategy
All possible delivery strategies are described in the symfony docs. A good solution is to edit factories.yml in all application config directories and set production environment to realtime and development environment to single_address. The developer enters an E-mail address he's got access to, puts it in the delivery_address option and all mails sent from the project will be delivered to that address (so there's no worry that a customer/user will receive test E-mail). Put the following lines into factories.yml file to define mail configuration:
prod: mailer: param: delivery_strategy: realtime dev: mailer: param: delivery_strategy: single_address delivery_address: email@example.comOnce we've set those values (even in the very beginning of a project development), we don't have to carry about mail configuration, hence symfony will carry out all mails to the correct addresses when working in the production environment.