[D] Command
[D] DataCollector
[D] Event
[D] EventListener
[D] Exception
[D] Header
[D] Messenger
[D] Test
[D] Transport
[F] CHANGELOG.md
[F] composer.json
[F] DelayedEnvelope.php
[F] Envelope.php
[F] error_log
[F] LICENSE
[F] Mailer.php
[F] MailerInterface.php
[F] README.md
[F] SentMessage.php
[F] Transport.php