mailsystem 7.x-1.3

Provides administrative UI and API for safely setting the mail_system variable.

A module "foo" with a MailSystemInterface implementation called "FooMailSystem" should add the following in its foo.install file:

/**
 * Implements hook_enable().
 */
function foo_enable() {
  mailsystem_set(array('foo' => 'FooMailSystem'));
}

/**
 * Implements hook_disable().
 */
function foo_disable() {
  mailsystem_clear(array('foo' => 'FooMailSystem'));
}

If module "foo" relies on dependency "bar" and its "BarMailSystem" class, then its code should like like this:

/**
 * Implements hook_enable().
 */
function foo_enable() {
  mailsystem_set(array('foo' => 'BarMailSystem'));
}

/**
 * Implements hook_disable().
 */
function foo_disable() {
  mailsystem_clear(array('foo' => ''));
}

If module "foo" only wants to use "BarMailSystem" when sending emails with a key of "foomail", then its code should look like this:

/**
 * Implements hook_enable().
 */
function foo_enable() {
  mailsystem_set(array('foo_foomail' => 'BarMailSystem'));
}

/**
 * Implements hook_disable().
 */
function foo_disable() {
  mailsystem_clear(array('foo_foomail' => ''));
}