…
..
Esmtp
AbstractSmtpTransport.php
EsmtpHandler.php
EsmtpTransport.php
FailoverTransport.php
IoBuffer.php
LoadBalancedTransport.php
MailInvoker.php
MailTransport.php
NullTransport.php
SendmailTransport.php
SimpleMailInvoker.php
SmtpAgent.php
SpoolTransport.php
StreamBuffer.php