diff --git a/core/server/config/url.js b/core/server/config/url.js
index 3d70b76ba9..543ad13f63 100644
--- a/core/server/config/url.js
+++ b/core/server/config/url.js
@@ -190,7 +190,9 @@ function urlFor(context, data, absolute) {
             urlPath = data.nav.url;
             baseUrl = getBaseUrl(secure);
             hostname = baseUrl.split('//')[1] + ghostConfig.paths.subdir;
-            if (urlPath.indexOf(hostname) > -1 && urlPath.indexOf('.' + hostname) === -1) {
+            if (urlPath.indexOf(hostname) > -1
+                && urlPath.indexOf('.' + hostname) === -1
+                && urlPath.indexOf('mailto:') !== 0) {
                 // make link relative to account for possible
                 // mismatch in http/https etc, force absolute
                 // do not do so if link is a subdomain of blog url
diff --git a/core/test/unit/config_spec.js b/core/test/unit/config_spec.js
index d129665451..61589671ac 100644
--- a/core/test/unit/config_spec.js
+++ b/core/test/unit/config_spec.js
@@ -382,6 +382,10 @@ describe('Config', function () {
                 config.set({url: 'http://my-ghost-blog.com/blog'});
                 testData = {nav: {url: 'http://my-ghost-blog.com/blog/short-and-sweet/'}};
                 config.urlFor(testContext, testData).should.equal('http://my-ghost-blog.com/blog/short-and-sweet/');
+
+                config.set({url: 'http://my-ghost-blog.com/'});
+                testData = {nav: {url: 'mailto:marshmallow@my-ghost-blog.com'}};
+                config.urlFor(testContext, testData).should.equal('mailto:marshmallow@my-ghost-blog.com');
             });
 
             it('should return other known paths when requested', function () {