diff --git a/src/markup/engine/__tests__/PhutilRemarkupEngineTestCase.php b/src/markup/engine/__tests__/PhutilRemarkupEngineTestCase.php
--- a/src/markup/engine/__tests__/PhutilRemarkupEngineTestCase.php
+++ b/src/markup/engine/__tests__/PhutilRemarkupEngineTestCase.php
@@ -75,6 +75,7 @@
       'uri.allowed-protocols',
       array(
         'http' => true,
+        'mailto' => true,
       ));
 
     $rules = array();
diff --git a/src/markup/engine/__tests__/remarkup/link-mailto.txt b/src/markup/engine/__tests__/remarkup/link-mailto.txt
new file mode 100644
--- /dev/null
+++ b/src/markup/engine/__tests__/remarkup/link-mailto.txt
@@ -0,0 +1,18 @@
+[[ mailto:alincoln@example.com | mail me ]]
+
+[ mail me ]( mailto:alincoln@example.com )
+
+[[mailto:alincoln@example.com]]
+
+~~~~~~~~~~
+<p><a href="mailto:alincoln@example.com" target="_blank" rel="noreferrer">mail me</a></p>
+
+<p><a href="mailto:alincoln@example.com" target="_blank" rel="noreferrer">mail me</a></p>
+
+<p><a href="mailto:alincoln@example.com" target="_blank" rel="noreferrer">alincoln@example.com</a></p>
+~~~~~~~~~~
+mail me <alincoln@example.com>
+
+mail me <alincoln@example.com>
+
+alincoln@example.com
diff --git a/src/markup/engine/remarkup/markuprule/PhutilRemarkupRuleDocumentLink.php b/src/markup/engine/remarkup/markuprule/PhutilRemarkupRuleDocumentLink.php
--- a/src/markup/engine/remarkup/markuprule/PhutilRemarkupRuleDocumentLink.php
+++ b/src/markup/engine/remarkup/markuprule/PhutilRemarkupRuleDocumentLink.php
@@ -37,6 +37,10 @@
         }
         $text = $base.$text;
       }
+
+      // If present, strip off "mailto:".
+      $text = preg_replace('/^mailto:/', '', $text);
+
       if ($link == $name) {
         return $text;
       }
@@ -50,6 +54,8 @@
       $target = null;
     }
 
+    $name = preg_replace('/^mailto:/', '', $name);
+
     if ($this->getEngine()->getState('toc')) {
       return $name;
     } else {
@@ -71,14 +77,15 @@
     // discussion about C source code into a link. To this end, we:
     //
     //   - Don't match at word boundaries;
-    //   - require the URI to contain a "/" character; and
+    //   - require the URI to contain a "/" character or "@" character; and
     //   - reject URIs which being with a quote character.
 
     if ($uri[0] == '"' || $uri[0] == "'" || $uri[0] == '`') {
       return $matches[0];
     }
 
-    if (strpos($uri, '/') === false) {
+    if (strpos($uri, '/') === false &&
+        strpos($uri, '@') === false) {
       return $matches[0];
     }
 
@@ -95,8 +102,8 @@
     $name = trim(idx($matches, 2, $uri));
 
     // If whatever is being linked to begins with "/" or "#", or has "://",
-    // treat it as a URI instead of a wiki page.
-    $is_uri = preg_match('@(^/)|(://)|(^#)@', $uri);
+    // or is "mailto:", treat it as a URI instead of a wiki page.
+    $is_uri = preg_match('@(^/)|(://)|(^#)|(^mailto:)@', $uri);
 
     if ($is_uri && strncmp('/', $uri, 1) && strncmp('#', $uri, 1)) {
       $protocols = $this->getEngine()->getConfig(