diff --git a/ChangeLog.md b/ChangeLog.md
index d0ca95c..eea6429 100644
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -41,6 +41,8 @@ repository history](https://github.com/ddclient/ddclient/commits/master).
   * The second and subsequent lines in a multi-line log message are now prefixed
     with a `|` character.
     [#676](https://github.com/ddclient/ddclient/pull/676)
+  * `emailonly`: New `protocol` option that simply emails you when your IP
+    address changes.  [#654](https://github.com/ddclient/ddclient/pull/654)
 
 ### Bug fixes
 
diff --git a/ddclient.conf.in b/ddclient.conf.in
index 8652635..e916958 100644
--- a/ddclient.conf.in
+++ b/ddclient.conf.in
@@ -391,3 +391,9 @@ ssl=yes					# use ssl-support.  Works with
 # password=ddns_password
 # redirect=2
 # example.com
+
+##
+## Email Only
+##
+# protocol=emailonly
+# host.example.com
diff --git a/ddclient.in b/ddclient.in
index c0fa54e..9ce0d1d 100755
--- a/ddclient.in
+++ b/ddclient.in
@@ -1067,6 +1067,18 @@ my %services = (
             %{$variables{'service-common-defaults'}},
         },
     },
+    'emailonly' => {
+        'updateable' => undef,
+        'update'     => \&nic_emailonly_update,
+        'examples'   => \&nic_emailonly_examples,
+        'variables'  => {
+            %{$variables{'service-common-defaults'}},
+            'login' => undef,
+            'password' => undef,
+            # Change default to never re-notify if IP address has not changed.
+            'max-interval' => setv(T_DELAY, 0, 0, 'inf', 0),
+        },
+    },
 );
 # Delete undefined variables to make it easier to cancel previously defined variables.
 for my $svc (values(%services)) {
@@ -8080,6 +8092,55 @@ sub nic_infomaniak_update {
     }
 }
 
+######################################################################
+## nic_emailonly_update
+##
+## Written by Joel Croteau
+##
+## Do not update Dynamic DNS, only send status emails. Use if you do
+## not have a DDNS host, but still want to get emails when your IP
+## address changes. Note that you must set the "mail" config option
+## and configure sendmail for this to have an effect.  At least one
+## host must be specified; the host names are mentioned in the email.
+######################################################################
+sub nic_emailonly_update {
+    debug("\nnic_emailonly_update -------------------");
+    # Note: This is logged after $config{$_}{'max-interval'] even if the IP address hasn't changed,
+    # so it is best to avoid phrasing like, "IP address has changed."
+    logmsg(email => 1, join("\n", 'Host IP addresses:', map({
+        my $ipv4 = delete($config{$_}{'wantipv4'});
+        my $ipv6 = delete($config{$_}{'wantipv6'});
+        $config{$_}{'status-ipv4'} = 'good' if $ipv4;
+        $config{$_}{'status-ipv6'} = 'good' if $ipv6;
+        $config{$_}{'ipv4'} = $ipv4 if $ipv4;
+        $config{$_}{'ipv6'} = $ipv6 if $ipv6;
+        $config{$_}{'mtime'} = $now;
+        sprintf('%30s  %s', $_, join('  ', grep(defined($_), $ipv4, $ipv6)));
+    } @_)));
+}
+
+######################################################################
+## nic_emailonly_examples
+######################################################################
+sub nic_emailonly_examples {
+    return <<"EoEXAMPLE";
+o 'emailonly'
+
+The 'emailonly' protocol is a dummy protocol that will send status emails but
+not actually issue any dynamic DNS updates. You can use this if you don\'t
+have a DDNS host, but still want to get emails when your IP address changes.
+For this to have an effect, you must set the 'mail' config option, have
+sendmail properly configured on your machine, and specify at least one dummy
+hostname.
+
+Example ${program}.conf file entries:
+  ## single host update
+  mail=me\@example.com
+  protocol=emailonly
+  host.example.com
+EoEXAMPLE
+}
+
 # Execute main() if this file is run as a script or run via PAR (https://metacpan.org/pod/PAR),
 # otherwise do nothing. This "modulino" pattern makes it possible to import this file as a module
 # and test its functions directly; there's no need for test-only command-line arguments or stdout