Class SmtpTransport
Send mail using SMTP protocol
- Cake\Mailer\AbstractTransport uses Cake\Core\InstanceConfigTrait
-  Cake\Mailer\Transport\SmtpTransport 
Properties summary
-  $_contentprotectedContent of email to returnarray
-  $_defaultConfigprotectedDefault config for this classarray
-  $_lastResponseprotectedThe response of the last sent SMTP command.array
-  Socket to SMTP server$_socketprotected
Inherited Properties
Method Summary
-  __destruct() publicDestructor
-  _auth() protectedSend authentication
-  _bufferResponseLines() protectedParses and stores the response lines in'code' => 'message'format.
-  _connect() protectedConnect to SMTP Server
-  _disconnect() protectedDisconnect
-  _generateSocket() protectedHelper method to generate socket
-  _prepareFromAddress() protectedPrepares thefromemail address.
-  _prepareFromCmd() protectedPrepares theMAIL FROMSMTP command.
-  _prepareMessage() protectedPrepares the message body.
-  _prepareMessageHeaders() protectedPrepares the message headers.
-  _prepareRcptCmd() protectedPrepares theRCPT TOSMTP command.
-  _prepareRecipientAddresses() protectedPrepares the recipient email addresses.
-  _sendData() protectedSend Data
-  _sendRcpt() protectedSend emails
-  _smtpSend() protectedProtected method for sending data to SMTP connection
-  connect() publicConnect to the SMTP server.
-  connected() publicCheck whether an open connection to the SMTP server is available.
-  disconnect() publicDisconnect from the SMTP server.
-  getLastResponse() publicReturns the response of the last sent SMTP command.
-  send() publicSend mail
Method Detail
__destruct()source public
__destruct( )
Destructor
Tries to disconnect to ensure that the connection is being terminated properly before the socket gets closed.
_bufferResponseLines()source protected
_bufferResponseLines( array $responseLines )
Parses and stores the response lines in 'code' => 'message' format.
Parameters
-  array $responseLines
- Response lines to parse.
_connect()source protected
_connect( )
Connect to SMTP Server
Throws
Cake\Network\Exception\SocketException_disconnect()source protected
_disconnect( )
Disconnect
Throws
Cake\Network\Exception\SocketException_generateSocket()source protected
_generateSocket( )
Helper method to generate socket
Throws
Cake\Network\Exception\SocketException_prepareFromAddress()source protected
_prepareFromAddress( Cake\Mailer\Email $email )
Prepares the from email address.
Parameters
-  Cake\Mailer\Email$email
- Email instance
Returns
array_prepareFromCmd()source protected
_prepareFromCmd( string $email )
Prepares the MAIL FROM SMTP command.
Parameters
-  string $email
- The email address to send with the command.
Returns
string_prepareMessage()source protected
_prepareMessage( Cake\Mailer\Email $email )
Prepares the message body.
Parameters
-  Cake\Mailer\Email$email
- Email instance
Returns
string_prepareMessageHeaders()source protected
_prepareMessageHeaders( Cake\Mailer\Email $email )
Prepares the message headers.
Parameters
-  Cake\Mailer\Email$email
- Email instance
Returns
array_prepareRcptCmd()source protected
_prepareRcptCmd( string $email )
Prepares the RCPT TO SMTP command.
Parameters
-  string $email
- The email address to send with the command.
Returns
string_prepareRecipientAddresses()source protected
_prepareRecipientAddresses( Cake\Mailer\Email $email )
Prepares the recipient email addresses.
Parameters
-  Cake\Mailer\Email$email
- Email instance
Returns
array_sendData()source protected
_sendData( Cake\Mailer\Email $email )
Send Data
Parameters
-  Cake\Mailer\Email$email
- Email instance
Throws
Cake\Network\Exception\SocketException_sendRcpt()source protected
_sendRcpt( Cake\Mailer\Email $email )
Send emails
Parameters
-  Cake\Mailer\Email$email
- Cake Email
Throws
Cake\Network\Exception\SocketException_smtpSend()source protected
_smtpSend( string|null $data , string|boolean $checkCode '250' )
Protected method for sending data to SMTP connection
Parameters
-  string|null $data
- Data to be sent to SMTP server
-  string|boolean $checkCodeoptional '250'
- Code to check for in server response, false to skip
Returns
string|nullThe matched code, or null if nothing matched
Throws
Cake\Network\Exception\SocketExceptionconnect()source public
connect( )
Connect to the SMTP server.
This method tries to connect only in case there is no open connection available already.
connected()source public
connected( )
Check whether an open connection to the SMTP server is available.
Returns
booleandisconnect()source public
disconnect( )
Disconnect from the SMTP server.
This method tries to disconnect only in case there is an open connection available.
getLastResponse()source public
getLastResponse( )
Returns the response of the last sent SMTP command.
A response consists of one or more lines containing a response code and an optional response message text:
[
    [
        'code' => '250',
        'message' => 'mail.example.com'
    ],
    [
        'code' => '250',
        'message' => 'PIPELINING'
    ],
    [
        'code' => '250',
        'message' => '8BITMIME'
    ],
    // etc...
] Returns
arraysend()source public
send( Cake\Mailer\Email $email )
Send mail
Parameters
-  Cake\Mailer\Email$email
- Email instance
Returns
arrayThrows
Cake\Network\Exception\SocketExceptionMethods inherited from Cake\Mailer\AbstractTransport
__construct()source public
__construct( array $config [] )
Constructor
Parameters
-  array $configoptional []
- Configuration options.
_headersToString()source protected
_headersToString( array $headers , string $eol "\r\n" )
Help to convert headers in string
Parameters
-  array $headers
- Headers in format key => value
-  string $eoloptional "\r\n"
- End of line string.
Returns
stringMethods used from Cake\Core\InstanceConfigTrait
_configDelete()source protected
_configDelete( string $key )
Deletes a single config key.
Parameters
-  string $key
- Key to delete.
Throws
Cake\Core\Exception\Exceptionif attempting to clobber existing config
_configRead()source protected
_configRead( string|null $key )
Reads a config key.
Parameters
-  string|null $key
- Key to read.
Returns
mixed_configWrite()source protected
_configWrite( string|array $key , mixed $value , boolean|string $merge false )
Writes a config key.
Parameters
-  string|array $key
- Key to write to.
-  mixed $value
- Value to write.
-  boolean|string $mergeoptional false
- True to merge recursively, 'shallow' for simple merge, false to overwrite, defaults to false. 
Throws
Cake\Core\Exception\Exceptionif attempting to clobber existing config
config()source public
config( string|array|null $key null , mixed|null $value null , boolean $merge true )
Gets/Sets the config.
Usage
Reading the whole config:
$this->config();
Reading a specific value:
$this->config('key'); Reading a nested value:
$this->config('some.nested.key'); Setting a specific value:
$this->config('key', $value); Setting a nested value:
$this->config('some.nested.key', $value); Updating multiple config settings at the same time:
$this->config(['one' => 'value', 'another' => 'value']);
Deprecated
3.4.0 use setConfig()/getConfig() instead.Parameters
-  string|array|null $keyoptional null
- The key to get/set, or a complete array of configs.
-  mixed|null $valueoptional null
- The value to set.
-  boolean $mergeoptional true
- Whether to recursively merge or overwrite existing config, defaults to true.
Returns
mixedConfig value being read, or the object itself on write operations.
Throws
Cake\Core\Exception\ExceptionWhen trying to set a key that is invalid.
configShallow()source public
configShallow( string|array $key , mixed|null $value null )
Merge provided config with existing config. Unlike config() which does a recursive merge for nested keys, this method does a simple merge.
Setting a specific value:
$this->configShallow('key', $value); Setting a nested value:
$this->configShallow('some.nested.key', $value); Updating multiple config settings at the same time:
$this->configShallow(['one' => 'value', 'another' => 'value']);
Parameters
-  string|array $key
- The key to set, or a complete array of configs.
-  mixed|null $valueoptional null
- The value to set.
Returns
$this
getConfig()source public
getConfig( string|null $key null , mixed $default null )
Returns the config.
Usage
Reading the whole config:
$this->getConfig();
Reading a specific value:
$this->getConfig('key'); Reading a nested value:
$this->getConfig('some.nested.key'); Reading with default value:
$this->getConfig('some-key', 'default-value'); Parameters
-  string|null $keyoptional null
- The key to get or null for the whole config.
-  mixed $defaultoptional null
- The return value when the key does not exist.
Returns
mixedConfig value being read.
setConfig()source public
setConfig( string|array $key , mixed|null $value null , boolean $merge true )
Sets the config.
Usage
Setting a specific value:
$this->setConfig('key', $value); Setting a nested value:
$this->setConfig('some.nested.key', $value); Updating multiple config settings at the same time:
$this->setConfig(['one' => 'value', 'another' => 'value']);
Parameters
-  string|array $key
- The key to set, or a complete array of configs.
-  mixed|null $valueoptional null
- The value to set.
-  boolean $mergeoptional true
- Whether to recursively merge or overwrite existing config, defaults to true.
Returns
$this
Throws
Cake\Core\Exception\ExceptionWhen trying to set a key that is invalid.
Properties detail
$_defaultConfigsource
protected array
Default config for this class
[
    'host' => 'localhost',
    'port' => 25,
    'timeout' => 30,
    'username' => null,
    'password' => null,
    'client' => null,
    'tls' => false,
    'keepAlive' => false
] 
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