Based on this comment

• fakesms+email should receive a mailer service id ✅ see initial PR [Notifier] [FakeSms] Add the bridge #39949
• fakesms+logger should receive a logger service id + an optional channel ?? 🤔
• fakesms+database should receive an entity manager service id + options ?? 🤔

And we end up with one Factory (like https://github.com/symfony/symfony/blob/5.x/src/Symfony/Component/Mailer/Bridge/Amazon/Transport/SesTransportFactory.php) and 6 transports

As another follow up we could create a symfony/fake-chat-notifier:

• fakechat+email ✅ [Notifier] [FakeChat] Added the bridge #40647
• fakechat+logger
• fakechat+database

@JamesHemery @noniagriconomie @ke20 anybody? 😄