diff --git a/deploy/cpanel.sh b/deploy/cpanel.sh
index bf1332ff..dc3837b3 100644
--- a/deploy/cpanel.sh
+++ b/deploy/cpanel.sh
@@ -6,6 +6,7 @@
 
 #export DEPLOY_CPANEL_USER=myusername
 #export DEPLOY_CPANEL_PASSWORD=PASSWORD
+#export DEPLOY_CPANEL_HOSTNAME=localhost:2083
 
 ########  Public functions #####################
 
@@ -23,7 +24,114 @@ cpanel_deploy() {
   _debug _cca "$_cca"
   _debug _cfullchain "$_cfullchain"
 
-  _err "Not implemented yet"
-  return 1
+export _ckey _ccert _cdomain
+# Perl code taken from https://documentation.cpanel.net/display/SDK/Tutorial+-+Call+UAPI%27s+SSL%3A%3Ainstall_ssl+Function+in+Custom+Code
+perl -f <<'END'
+# Return errors if Perl experiences problems.
+use strict;
+use warnings;
+# Allow my code to perform web requests.
+use LWP::UserAgent;
+use LWP::Protocol::https;
+# Use the correct encoding to prevent wide character warnings.
+use Encode;
+use utf8;
+# Properly decode JSON.
+use JSON;
+# Function properly with Base64 authentication headers.
+use MIME::Base64;
 
+# Authentication information.
+my $username = $ENV{'DEPLOY_CPANEL_USER'};
+my $password = $ENV{'DEPLOY_CPANEL_PASSWORD'};
+my $hostname = $ENV{'DEPLOY_CPANEL_HOSTNAME'};
+
+# The URL for the SSL::install_ssl UAPI function.
+my $request = "https://".$hostname."/execute/SSL/install_ssl";
+
+# Required to allow HTTPS connections to unsigned services.
+# Services on localhost are always unsigned.
+$ENV{PERL_LWP_SSL_VERIFY_HOSTNAME} = 0;
+
+# Create a useragent object.
+my $ua = LWP::UserAgent->new();
+
+# Add authentication headers.
+$ua->default_header(
+    'Authorization' => 'Basic ' . MIME::Base64::encode("$username:$password"),
+);
+
+# Read in the SSL certificate and key file.
+my $cert = $ENV{'_ccert'};
+my $key = $ENV{'_ckey'};
+{
+    local $/;
+    open ( my $fh, '<', $cert );
+    $cert = <$fh>;
+    close $fh;
+
+    open ( $fh, '<', $key );
+    $key = <$fh>;
+    close $fh;
 }
+
+my $domain = $ENV{'_cdomain'};
+
+# Make the call.
+my $response = $ua->post($request,
+    Content_Type => 'form-data',
+    Content => [
+        domain => $domain,
+        cert   => $cert,
+        key    => $key,
+    ],
+);
+
+# Create an object to decode the JSON.
+# Sorted by keys and pretty-printed.
+my $json_printer = JSON->new->pretty->canonical(1);
+
+# UTF-8 encode before decoding to avoid wide character warnings.
+my $content = JSON::decode_json(Encode::encode_utf8($response->decoded_content));
+
+# Print output, UTF-8 encoded to avoid wide character warnings.
+print Encode::encode_utf8($json_printer->encode($content));
+
+=pod
+{
+   "data" : {
+      "action" : "none",
+      "aliases" : [
+         "mail.example.com"
+      ],
+      "cert_id" : "example_com_xxx_yyy_zzzzzzzzzzzzzzzzzz",
+      "domain" : "example.com",
+      "extra_certificate_domains" : [],
+      "html" : "<br /><b>This certificate was already installed on this host. The system made no changes.</b><br />\n",
+      "ip" : "127.0.0.1",
+      "key_id" : "xxx_yyy_zzzzzzzzzzzzzzzz",
+      "message" : "This certificate was already installed on this host. The system made no changes.",
+      "servername" : "example.com",
+      "status" : 1,
+      "statusmsg" : "This certificate was already installed on this host. The system made no changes.",
+      "user" : "username",
+      "warning_domains" : [
+         "mail.example.com"
+      ],
+      "working_domains" : [
+         "example.com"
+      ]
+   },
+   "errors" : null,
+   "messages" : [
+      "The certificate was successfully installed on the domain “example.com”."
+   ],
+   "metadata" : {},
+   "status" : 1
+}
+=cut
+
+END
+
+}
+