diff --git a/seahub/base/templatetags/seahub_tags.py b/seahub/base/templatetags/seahub_tags.py
index 1ec1e3a856..85672e2e7f 100644
--- a/seahub/base/templatetags/seahub_tags.py
+++ b/seahub/base/templatetags/seahub_tags.py
@@ -43,7 +43,7 @@ def tsstr_day(value):
     except:
         return datetime.fromtimestamp(value/1000000).strftime("%Y-%m-%d")
 
-# Supported file extensions and file icon name. 
+# Supported file extensions and file icon name.
 FILEEXT_ICON_MAP = {
     # pdf file
     'pdf' : 'pdf.png',
@@ -136,7 +136,7 @@ def file_icon_filter(value, size=None):
             return FILEEXT_ICON_MAP.get('default')
 
 # This way of translation looks silly, but works well.
-COMMIT_MSG_TRANSLATION_MAP = {  
+COMMIT_MSG_TRANSLATION_MAP = {
     'Added' : _('Added'),
     'Deleted' : _('Deleted'),
     'Removed' : _('Removed'),
@@ -156,11 +156,11 @@ def translate_commit_desc(value):
         # Change 'repo' to 'library' in revert commit msg, since 'repo' is
         # only used inside of seafile system.
         value = value.replace('repo', 'library')
-        
+
     # Do nothing if current language is English.
     if translation.get_language() == 'en':
         return value
-    
+
     if value.startswith('Reverted library'):
         return value.replace('Reverted library to status at', _('Reverted library to status at'))
     elif value.startswith('Reverted file'):
@@ -189,14 +189,14 @@ def translate_commit_desc(value):
             if not m:
                 ret_list.append(e)
                 continue
-        
+
             op = m.group(1)     # e.g., "Added"
             op_trans = _(op)
             file_name = m.group(2) # e.g., "foo.txt"
             has_more = m.group(3)  # e.g., "and 3 more files"
             n_files = m.group(4)   # e.g., "3"
             more_type = m.group(5) # e.g., "files"
-    
+
             if has_more:
                 if translation.get_language() == 'zh-cn':
                     typ = u'文件' if more_type == 'files' else u'目录'
@@ -354,7 +354,7 @@ def translate_seahub_time_str(val):
         return ret
     else:
         return _('Just now')
-    
+
 @register.filter(name='email2nickname')
 def email2nickname(value):
     """
@@ -378,12 +378,23 @@ def email2nickname(value):
     cache.set(key, nickname, NICKNAME_CACHE_TIMEOUT)
     return nickname
 
+@register.filter(name='email2contact_email')
+def email2contact_email(value):
+    """
+    Return contact_email if it exists and it's not an empty string,
+    otherwise return username(login email).
+    """
+    if not value:
+        return ''
+
+    return Profile.objects.get_contact_email_by_user(value)
+
 @register.filter(name='email2id')
 def email2id(value):
     """
     Return the user id of an email. User id can be 0(ldap user),
     positive(registered user) or negtive(unregistered user).
-    
+
     """
     if not value:
         return -1
@@ -405,7 +416,7 @@ def id_or_email(value):
     """
     uid = email2id(value)
     return value if uid == 0 else uid
-    
+
 @register.filter(name='url_target_blank')
 def url_target_blank(text):
     return text.replace('<a ', '<a target="_blank" ')
diff --git a/seahub/templates/base.html b/seahub/templates/base.html
index 3d01957225..23b684332a 100644
--- a/seahub/templates/base.html
+++ b/seahub/templates/base.html
@@ -58,7 +58,7 @@
                                 {% avatar request.user 36 %}
                                 <div class="txt">
                                     {{ request.user.username|email2nickname }} <br />
-                                    {{ request.user.username}}
+                                    {{ request.user.username|email2contact_email}}
                                 </div>
                             </div>
                             <span class="loading-icon loading-tip"></span>
diff --git a/seahub/templates/js/sysadmin-templates.html b/seahub/templates/js/sysadmin-templates.html
index 005846667c..c98ea6b6bd 100644
--- a/seahub/templates/js/sysadmin-templates.html
+++ b/seahub/templates/js/sysadmin-templates.html
@@ -224,7 +224,7 @@
             {% avatar request.user 36 %}
             <div class="txt">
                 <%- app.pageOptions.name %><br />
-                <%- app.pageOptions.email %>
+                <%- app.pageOptions.contact_email %>
             </div>
         </div>
         <div class="loading-icon loading-tip"></div>
diff --git a/seahub/templates/js/templates.html b/seahub/templates/js/templates.html
index 82ac914689..ab13012b59 100644
--- a/seahub/templates/js/templates.html
+++ b/seahub/templates/js/templates.html
@@ -1461,7 +1461,7 @@
             {% avatar request.user 36 %}
             <div class="txt">
                 <%- app.pageOptions.name %><br />
-                <%- app.pageOptions.username %>
+                <%- app.pageOptions.contact_email %>
             </div>
         </div>
         <div class="loading-icon loading-tip"></div>
diff --git a/seahub/templates/libraries.html b/seahub/templates/libraries.html
index 101ec953f4..a47a0dbbe3 100644
--- a/seahub/templates/libraries.html
+++ b/seahub/templates/libraries.html
@@ -239,6 +239,7 @@ app["pageOptions"] = {
     })(),
     username: "{{request.user.username}}",
     name: "{{request.user.username|email2nickname|escapejs}}",
+    contact_email: "{{ request.user.username|email2contact_email|escapejs }}",
     events_enabled: {% if events_enabled %} true {% else %} false {% endif %},
     can_add_repo: {% if user.permissions.can_add_repo %} true {% else %} false {% endif %},
     can_generate_shared_link: {% if user.permissions.can_generate_shared_link %} true {% else %} false {% endif %},
diff --git a/seahub/templates/sysadmin/sysadmin_backbone.html b/seahub/templates/sysadmin/sysadmin_backbone.html
index 6462f7f384..29c64088a6 100644
--- a/seahub/templates/sysadmin/sysadmin_backbone.html
+++ b/seahub/templates/sysadmin/sysadmin_backbone.html
@@ -56,7 +56,7 @@
                             {% avatar request.user 36 %}
                             <div class="txt">
                                 {{ request.user.username|email2nickname }} <br />
-                                {{ request.user.username}}
+                                {{ request.user.username|email2contact_email }}
                             </div>
                         </div>
                         <span class="loading-icon loading-tip"></span>
@@ -107,6 +107,7 @@ app["pageOptions"] = {
     csrfToken: "{{ csrf_token }}",
     email: "{{request.user.username}}",
     name: "{{request.user.username|email2nickname|escapejs}}",
+    contact_email: "{{request.user.username|email2contact_email|escapejs}}",
     language_code: "{{ LANGUAGE_CODE }}",
     events_enabled: {% if events_enabled %} true {% else %} false {% endif %},
     repo_password_min_length: {{ repo_password_min_length }},