diff --git a/Documentation/config.txt b/Documentation/config.txt
index cda6721013..bb8db24c6f 100644
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -1717,6 +1717,7 @@ sendemail.to::
 sendemail.smtpdomain::
 sendemail.smtpserver::
 sendemail.smtpserverport::
+sendemail.smtpserveroption::
 sendemail.smtpuser::
 sendemail.thread::
 sendemail.validate::
diff --git a/Documentation/git-send-email.txt b/Documentation/git-send-email.txt
index c283084272..cde404a461 100644
--- a/Documentation/git-send-email.txt
+++ b/Documentation/git-send-email.txt
@@ -165,6 +165,15 @@ user is prompted for a password while the input is masked for privacy.
 	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'.
 
diff --git a/git-send-email.perl b/git-send-email.perl
index 39cb5afe28..47989fe6dd 100755
--- a/git-send-email.perl
+++ b/git-send-email.perl
@@ -60,6 +60,7 @@ git send-email [options] <file | directory | rev-list options >
     --envelope-sender       <str>  * Email envelope sender.
     --smtp-server       <str:int>  * Outgoing SMTP server to use. The port
                                      is optional. Default 'localhost'.
+    --smtp-server-option    <str>  * Outgoing SMTP server option to use.
     --smtp-server-port      <int>  * Outgoing SMTP server port.
     --smtp-user             <str>  * Username for SMTP-AUTH.
     --smtp-pass             <str>  * Password for SMTP-AUTH; not necessary.
@@ -188,7 +189,8 @@ sub do_edit {
 
 # Variables with corresponding config settings
 my ($thread, $chain_reply_to, $suppress_from, $signed_off_by_cc, $cc_cmd);
-my ($smtp_server, $smtp_server_port, $smtp_authuser, $smtp_encryption);
+my ($smtp_server, $smtp_server_port, @smtp_server_options);
+my ($smtp_authuser, $smtp_encryption);
 my ($identity, $aliasfiletype, @alias_files, $smtp_domain);
 my ($validate, $confirm);
 my (@suppress_cc);
@@ -210,6 +212,7 @@ my %config_bool_settings = (
 my %config_settings = (
     "smtpserver" => \$smtp_server,
     "smtpserverport" => \$smtp_server_port,
+    "smtpserveroption" => \@smtp_server_options,
     "smtpuser" => \$smtp_authuser,
     "smtppass" => \$smtp_authpass,
     "smtpdomain" => \$smtp_domain,
@@ -279,6 +282,7 @@ my $rc = GetOptions("sender|from=s" => \$sender,
 		    "no-bcc" => \$no_bcc,
 		    "chain-reply-to!" => \$chain_reply_to,
 		    "smtp-server=s" => \$smtp_server,
+		    "smtp-server-option=s" => \@smtp_server_options,
 		    "smtp-server-port=s" => \$smtp_server_port,
 		    "smtp-user=s" => \$smtp_authuser,
 		    "smtp-pass:s" => \$smtp_authpass,
@@ -1015,6 +1019,8 @@ X-Mailer: git-send-email $gitversion
 		}
 	}
 
+	unshift (@sendmail_parameters, @smtp_server_options);
+
 	if ($dry_run) {
 		# We don't want to send the email.
 	} elsif ($smtp_server =~ m#^/#) {