used. The
special value 'none' maybe specified to completely disable authentication
independently of `--smtp-user`

--smtp-pass[=<password>]::
	Password for SMTP-AUTH. The argument is optional: If no
	argument is specified, then the empty string is used as
	the password. Default is the value of `sendemail.smtpPass`,
	however `--smtp-pass` always overrides this value.
+
Furthermore, passwords need not be specified in configuration files
or on the command line. If a username has been specified (with
`--smtp-user` or a `sendemail.smtpUser`), but no password has been
specified (with `--smtp-pass` or `sendemail.smtpPass`), then
a password is obtained using 'git-credential'.

--no-smtp-auth::
	Disable SMTP authentication. Short hand for `--smtp-auth=none`

--smtp-server=<host>::
	If set, specifies the outgoing SMTP server to use (e.g.
	`smtp.example.com` or a raw IP address).  If unspecified, and if
	`--sendmail-cmd` is also unspecified, the default is to search
	for `sendmail` in `/usr/sbin`, `/usr/lib` and $PATH if such a
	program is available, falling back to `localhost` otherwise.
+
For backward compatibility, this option can also specify a full pathname
of a sendmail-like program instead; the program must support the `-i`
option.  This method does not support passing arguments or using plain
command names.  For those use cases, consider using `--sendmail-cmd`
instead.

--smtp-server-port=<port>::
	Specifies a port different from the default port (SMTP
	servers typically listen to smtp port 25, but may also listen to
	submission port 587, or the common SSL smtp port 465);
	symbolic port names (e.g. "submission" instead of 587)
	are also accepted. The port can also be set with the
	`sendemail.smtpServerPort` configuration variable.

--smtp-server-option=<option>::
	If set, specifies the outgoing SMTP server option to use.
	Default value can be specified by the `sendemail.smtpServerOption`
	configuration option.
+
The --smtp-server-option option must be repeated for each option you want
to pass to the server. Likewise, different lines in the configuration files
must be used for each option.

--smtp-ssl::
	Legacy alias for '--smtp-encryption ssl'.

--smtp-ssl-cert-path::
	Path to a store of trusted CA certificates for SMTP SSL/TLS
	certificate validation (either a directory that has been processed
	by 'c_rehash', or a single file containing one or more PEM format
	certificates concatenated together: see verify(1) -CAfile and
	-CApath for more information on these). Set it to an empty string
	to disable certificate verification. Defaults to the value of the
	`sendemail.smtpSSLCertPath` configuration variable, if set, or the
	backing SSL library's compiled-in default otherwise (which should
	be the best choice on most platforms).

--smtp-user=<user>::
	Username for SMTP-AUTH. Default is the value of `sendemail.smtpUser`;
	if a username is not specified (with `--smtp-user` or `sendemail.smtpUser`),
	then authentication is not attempted.

--smtp-debug=(0|1)::
	Enable (1) or disable (0) debug output. If enabled, SMTP
	commands and replies will be printed. Useful to debug TLS
	connection and authentication problems.

--batch-size=<num>::
	Some email servers (e.g. smtp.163.com) limit the number emails to be
	sent per session (connection) and this will lead to a failure when
	sending many messages.  With this option, send-email will disconnect after
	sending $<num> messages and wait for a few seconds (see --relogin-delay)
	and reconnect, to work around such a limit.  You may want to
	use some form of credential helper to avoid having to retype
	your password every time this happens.  Defaults to the
	`sendemail.smtpBatchSize` configuration variable.

--relogin-delay=<int>::
	Waiting $<int> seconds before reconnecting to SMTP server. Used together
	with --batch-size option.  Defaults to the `sendemail.smtpReloginDelay`
	configuration variable.

Automating
~~~~~~~~~~

--no-to::
--no-cc::
--no-bcc::
	Clears any list of "To:", "Cc:", "Bcc:" addresses