diff --git a/seahub/auth/forms.py b/seahub/auth/forms.py
index 05f4ed5b22..46191fd7f7 100644
--- a/seahub/auth/forms.py
+++ b/seahub/auth/forms.py
@@ -7,7 +7,7 @@ from django.utils.http import int_to_base36
 from seahub.base.accounts import User
 from seahub.auth import authenticate
 from seahub.auth.tokens import default_token_generator
-from seahub.utils import IS_EMAIL_CONFIGURED
+from seahub.utils import IS_EMAIL_CONFIGURED, get_service_url
 
 from captcha.fields import CaptchaField
 
@@ -92,24 +92,24 @@ class PasswordResetForm(forms.Form):
         if not domain_override:
             current_site = Site.objects.get_current()
             site_name = current_site.name
-            domain = current_site.domain
         else:
-            site_name = domain = domain_override
+            site_name = domain_override
+
+        service_url = get_service_url()
         t = loader.get_template(email_template_name)
 
         c = {
             'email': user.username,
-            'domain': domain,
             'site_name': site_name,
             'uid': int_to_base36(user.id),
             'user': user,
             'token': token_generator.make_token(user),
-            'protocol': use_https and 'https' or 'http',
+            'service_url': service_url,
             'media_url': settings.MEDIA_URL,
             'logo_path': settings.LOGO_PATH,
         }
 
-        msg = EmailMessage(_("Password reset on %s") % site_name,
+        msg = EmailMessage(_("Reset Password on %s") % site_name,
                   t.render(Context(c)), None, [user.username])
         msg.content_subtype = "html"  # Main content is now text/html
         msg.send()
diff --git a/seahub/group/templates/group/add_member_email.html b/seahub/group/templates/group/add_member_email.html
index 211e966036..db82b6f3f3 100644
--- a/seahub/group/templates/group/add_member_email.html
+++ b/seahub/group/templates/group/add_member_email.html
@@ -1,9 +1,18 @@
-{% load url from future %}{% load i18n %}{% autoescape off %}
-{% blocktrans %}{{ email }} invite you to join group {{ group.group_name }}. Please go to the following page and sign up:{% endblocktrans %}
-{{ protocol }}://{{ domain }}{% url 'registration_register' %}?src={{ to_email }}
+{% extends 'email_base.html' %}
 
-{% trans "Thanks for using our site!" %}
+{% load i18n seahub_tags %}
 
-{% blocktrans %}The {{ site_name }} team{% endblocktrans %}
+{% block email_con %}
+{% autoescape off %}
+
+<p style="color:#121214;font-size:14px;">{% trans "Hi, " %}</p>
+
+<p style="font-size:14px;color:#434144;">
+{% blocktrans with grp_name=group.group_name %}{{ email }} invited you to join group {{ grp_name }} on {{ site_name }}: {% endblocktrans %}<br />
+{{ service_url }}{% url 'registration_register' %}?src={{ to_email }}
+</p>
 
 {% endautoescape %}
+{% endblock %}
+
+
diff --git a/seahub/group/views.py b/seahub/group/views.py
index 291041ba36..9c46a1942a 100644
--- a/seahub/group/views.py
+++ b/seahub/group/views.py
@@ -6,7 +6,7 @@ import simplejson as json
 import urllib2
 
 from django.conf import settings
-from django.core.mail import send_mail
+from django.core.mail import EmailMessage
 from django.core.paginator import EmptyPage, InvalidPage
 from django.core.urlresolvers import reverse
 from django.contrib import messages
@@ -50,11 +50,11 @@ from seahub.wiki import get_group_wiki_repo, get_group_wiki_page, convert_wiki_l
     get_wiki_pages
 from seahub.wiki.models import WikiDoesNotExist, WikiPageMissing, GroupWiki
 from seahub.wiki.utils import clean_page_name, get_wiki_dirent
-from seahub.settings import SITE_ROOT, SITE_NAME, MEDIA_URL
+from seahub.settings import SITE_ROOT, SITE_NAME, MEDIA_URL, LOGO_PATH
 from seahub.shortcuts import get_first_object_or_none
 from seahub.utils import render_error, render_permission_error, string2list, \
     check_and_get_org_by_group, gen_file_get_url, get_file_type_and_ext, \
-    calc_file_path_hash, is_valid_username
+    calc_file_path_hash, is_valid_username, get_service_url
 from seahub.utils.file_types import IMAGE
 from seahub.utils.paginator import Paginator
 from seahub.views import is_registered_user
@@ -640,21 +640,23 @@ def group_manage(request, group_id):
                     continue
                 
                 if not is_registered_user(email):
-                    use_https = request.is_secure()
-                    domain = RequestSite(request).domain
+                    service_url = get_service_url()
                     t = loader.get_template('group/add_member_email.html')
                     c = {
                         'email': username,
                         'to_email': email,
                         'group': group,
-                        'domain': domain,
-                        'protocol': use_https and 'https' or 'http',
+                        'service_url': service_url,
                         'site_name': SITE_NAME,
+                        'media_url': MEDIA_URL,
+                        'logo_path': LOGO_PATH,
                         }
                     try:
-                        send_mail(_(u'Your friend added you to a group at Seafile.'),
-                                  t.render(Context(c)), None, [email],
-                                  fail_silently=False)
+                        msg = EmailMessage(_(u'You are invited to join a group on %s.') % SITE_NAME,
+                                  t.render(Context(c)), None, [email])
+                        msg.content_subtype = "html"
+                        msg.send() 
+
                         mail_sended_list.append(email)
                     except Exception, e:
                         logger.warn(e)
diff --git a/seahub/notifications/management/commands/send_notices.py b/seahub/notifications/management/commands/send_notices.py
index b285910faf..f98bda3f60 100644
--- a/seahub/notifications/management/commands/send_notices.py
+++ b/seahub/notifications/management/commands/send_notices.py
@@ -3,44 +3,28 @@ import datetime
 import logging
 import string
 
-from django.core.mail import send_mail
+from django.core.mail import EmailMessage
 from django.core.management.base import BaseCommand, CommandError
 from django.core.urlresolvers import reverse
 
 from seahub.base.models import CommandsLastCheck
 from seahub.notifications.models import UserNotification
+from seahub.utils import get_service_url
 import seahub.settings as settings
 
+from django.template import Context, loader
+
 # Get an instance of a logger
 logger = logging.getLogger(__name__)
 
-email_templates = (u'''Hi, ${to_user}
-You've got ${count} new notice on ${site_name}.
-
-Go check out at ${url}
-
-Thanks for using our site!
-
-${site_name} team
-''',
-u'''Hi, ${to_user}
-You've got ${count} new notices on ${site_name}.
-
-Go check out at ${url}
-
-Thanks for using our site!
-
-${site_name} team
-''')
-
-                  
-
 site_name = settings.SITE_NAME
 subjects = (u'New notice on %s' % site_name, u'New notices on %s' % site_name)
-url = settings.SITE_BASE.rstrip('/') + reverse('user_notification_list')
+service_url = get_service_url() 
+media_url = settings.MEDIA_URL
+logo_path = settings.LOGO_PATH
 
 class Command(BaseCommand):
-    help = 'Send Email notifications to user if he/she has a unread notices every period of seconds .'
+    help = 'Send Email notifications to user if he/she has an unread notices every period of seconds .'
     label = "notifications_send_notices"
 
     def handle(self, *args, **options):
@@ -79,14 +63,22 @@ class Command(BaseCommand):
         
         for to_user, count in email_ctx.items():
             subject = subjects[1] if count > 1 else subjects[0]
-            template = string.Template(email_templates[1]) if count > 1 else \
-                string.Template(email_templates[0])
-            content = template.substitute(to_user=to_user, count=count,
-                                         site_name=site_name, url=url)
+            t = loader.get_template('notifications/notice_email.html')
+            c = { 
+                    'site_name': site_name,
+                    'media_url': media_url,
+                    'logo_path': logo_path,
+                    'service_url': service_url,
+                    'to_user': to_user,
+                    'notice_count': count,
+                }   
 
             try:
-                send_mail(subject, content, settings.DEFAULT_FROM_EMAIL,
-                          [to_user], fail_silently=False)
+                msg = EmailMessage(subject, t.render(Context(c)), settings.DEFAULT_FROM_EMAIL,
+                        [to_user])
+                msg.content_subtype = "html"
+                msg.send()
                 logger.info('Successfully sent email to %s' % to_user)
+
             except Exception, e:
                 logger.error('Failed to send email to %s, error detail: %s' % (to_user, e))
diff --git a/seahub/notifications/templates/notifications/notice_email.html b/seahub/notifications/templates/notifications/notice_email.html
new file mode 100644
index 0000000000..dd2af967a2
--- /dev/null
+++ b/seahub/notifications/templates/notifications/notice_email.html
@@ -0,0 +1,24 @@
+{% extends 'email_base.html' %}
+
+{% load i18n seahub_tags %}
+
+{% block email_con %}
+{% autoescape off %}
+
+<p style="color:#121214;font-size:14px;">{% blocktrans with name=to_user|email2nickname %}Hi {{ name }},{% endblocktrans %}</p>
+
+<p style="font-size:14px;color:#434144;">
+{% blocktrans count num=notice_count %}
+You've got 1 new notice on {{ site_name }}.
+{% plural %}
+You've got {{num}} new notices on {{ site_name }}.
+{% endblocktrans %}
+</p>
+
+<p style="font-size:14px;color:#434144;">
+{% trans "Go check out at the following page:" %}<br />
+{{ service_url }}{% url 'user_notification_list' %}
+</p>
+
+{% endautoescape %}
+{% endblock %}
diff --git a/seahub/share/views.py b/seahub/share/views.py
index 51f9330d40..92a20e2def 100644
--- a/seahub/share/views.py
+++ b/seahub/share/views.py
@@ -37,7 +37,7 @@ from seahub.views import validate_owner, is_registered_user
 from seahub.utils import render_permission_error, string2list, render_error, \
     gen_token, gen_shared_link, gen_shared_upload_link, gen_dir_share_link, \
     gen_file_share_link, IS_EMAIL_CONFIGURED, check_filename_with_rename, \
-    get_repo_last_modify, is_valid_username
+    get_repo_last_modify, is_valid_username, get_service_url
 
 import seahub.settings as settings
 try:
@@ -800,21 +800,19 @@ def send_shared_link(request):
             mail_sended.send(sender=None, user=request.user.username,
                              email=to_email)
 
-            use_https = request.is_secure()
-            domain = RequestSite(request).domain
+            service_url = get_service_url()
             c = {
                 'email': request.user.username,
                 'to_email': to_email,
                 'file_shared_link': file_shared_link,
                 'site_name': SITE_NAME,
-                'domain': domain,
-                'protocol': use_https and 'https' or 'http',
+                'service_url': service_url,
                 'media_url': settings.MEDIA_URL,
                 'logo_path': settings.LOGO_PATH,
-                }
+            }
 
             try:
-                msg = EmailMessage(_(u'Your friend shared a file to you on Seafile'),
+                msg = EmailMessage(_(u'A file is shared to you on s%') % SITE_NAME,
                           t.render(Context(c)), None, [to_email])
                 msg.content_subtype = "html"
                 msg.send()
@@ -1081,22 +1079,19 @@ def send_shared_upload_link(request):
             mail_sended.send(sender=None, user=request.user.username,
                              email=to_email)
 
-
-            use_https = request.is_secure()
-            domain = RequestSite(request).domain
+            service_url = get_service_url()
             c = {
                 'email': request.user.username,
                 'to_email': to_email,
                 'shared_upload_link': shared_upload_link,
                 'site_name': SITE_NAME,
-                'domain': domain,
-                'protocol': use_https and 'https' or 'http',
+                'service_url': service_url,
                 'media_url': settings.MEDIA_URL,
                 'logo_path': settings.LOGO_PATH,
                 }
 
             try:
-                msg = EmailMessage(_(u'Your friend shared a upload link to you on Seafile'),
+                msg = EmailMessage(_(u'An upload link is shared to you on s%') % SITE_NAME,
                           t.render(Context(c)), None, [to_email])
                 msg.content_subtype = "html"
                 msg.send()
diff --git a/seahub/templates/email_base.html b/seahub/templates/email_base.html
index 64783187f5..414f300963 100644
--- a/seahub/templates/email_base.html
+++ b/seahub/templates/email_base.html
@@ -1,7 +1,7 @@
 {% load i18n %}
 <div style="background:#f2f2f2;padding:40px 0;">
 <div style="width:700px;background:#fff;border-style:solid;border-width:1px;border-color:#eaeaea #cccccc #a6a6a6;border-radius:4px;box-shadow:0 2px 2px #cdcdcd;margin:0 auto;">
-    <img src="{{ protocol }}://{{domain}}{{media_url}}{{logo_path}}" alt="" style="display:block;margin:20px 0 15px 50px;" />
+    <img src="{{ service_url }}{{media_url}}{{logo_path}}" alt="" style="display:block;margin:20px 0 15px 50px;" />
     <div style="padding:30px 55px 40px;min-height:300px;border-top:1px solid #efefef;box-shadow:inset 0 30px 30px #fcfcfc;">
         {% block email_con %}{% endblock %}
 
diff --git a/seahub/templates/registration/password_reset_email.html b/seahub/templates/registration/password_reset_email.html
index 6a975cc618..4663eeacef 100644
--- a/seahub/templates/registration/password_reset_email.html
+++ b/seahub/templates/registration/password_reset_email.html
@@ -8,17 +8,13 @@
 
 <p style="color:#121214;font-size:14px;">{% trans "Hi," %}</p>
 
-<p style="font-size:14px;color:#434144;">{% blocktrans %}You're receiving this e-mail because you requested a password reset for your user account at {{ site_name }}. {% endblocktrans %}</p>
-
 <p style="font-size:14px;color:#434144;">
-{% trans "Please go to the following page and choose a new password:" %}<br />
-{% block reset_link %}
-{{ protocol }}://{{ domain }}{% url 'auth_password_reset_confirm' uidb36=uid token=token %}
-{% endblock %}
+{% blocktrans with account=user.username %}To reset the password of your account {{ account }} on {{ site_name }}, please click the following link: {% endblocktrans %}<br />
+{{ service_url }}{% url 'auth_password_reset_confirm' uidb36=uid token=token %}
 </p>
 
 <p style="font-size:14px;color:#434144;">
-{% trans "Your username, in case you've forgotten:" %} {{ user.username }}
+{% trans "If you did not request it, just skip it." %}<br />
 </p>
 
 {% endautoescape %}
diff --git a/seahub/templates/shared_link_email.html b/seahub/templates/shared_link_email.html
index c1b4f4b808..81cda4b17a 100644
--- a/seahub/templates/shared_link_email.html
+++ b/seahub/templates/shared_link_email.html
@@ -9,11 +9,7 @@
 <p style="color:#121214;font-size:14px;">{% trans "Hi," %}</p>
 
 <p style="font-size:14px;color:#434144;">
-{% blocktrans %}You're receiving this e-mail because {{ email }} is sharing a file to you on {{ site_name }}.{% endblocktrans%}
-</p>
-
-<p style="font-size:14px;color:#434144;">
-{% trans "Please go to the following page and view the file:" %}<br />
+{% blocktrans %}{{ email }} shared a file to you on {{ site_name }}:{% endblocktrans%} <br />
 {{ file_shared_link }}
 </p>
 
diff --git a/seahub/templates/shared_upload_link_email.html b/seahub/templates/shared_upload_link_email.html
index d99a660396..09c0558e31 100644
--- a/seahub/templates/shared_upload_link_email.html
+++ b/seahub/templates/shared_upload_link_email.html
@@ -8,7 +8,7 @@
 <p style="color:#121214;font-size:14px;">{% trans "Hi," %}</p>
 
 <p style="font-size:14px;color:#434144;">
-{% blocktrans %}You're receiving this e-mail because {{ email }} has shared an upload link to you on {{ site_name }}.{% endblocktrans%}
+{% blocktrans %}{{ email }} shared an upload link to you on {{ site_name }}.{% endblocktrans%}
 </p>
 
 <p style="font-size:14px;color:#434144;">
diff --git a/seahub/templates/sysadmin/user_activation_email.html b/seahub/templates/sysadmin/user_activation_email.html
new file mode 100644
index 0000000000..a6ce48ad09
--- /dev/null
+++ b/seahub/templates/sysadmin/user_activation_email.html
@@ -0,0 +1,19 @@
+{% extends 'email_base.html' %}
+
+{% load i18n %}
+
+{% block email_con %}
+
+{% autoescape off %}
+
+<p style="color:#121214;font-size:14px;">{% trans "Hi," %}</p>
+
+<p style="font-size:14px;color:#434144;">
+{% blocktrans %}Your account {{ username }} on {{ site_name }} has been activated.{% endblocktrans %}
+</p>
+
+<a href="{{ service_url }}{% url 'auth_login' %}" target="_blank">{% trans "Log In" %}</a>
+
+{% endautoescape %}
+
+{% endblock %}
diff --git a/seahub/templates/sysadmin/user_activation_email.txt b/seahub/templates/sysadmin/user_activation_email.txt
deleted file mode 100644
index 56ca2b5dab..0000000000
--- a/seahub/templates/sysadmin/user_activation_email.txt
+++ /dev/null
@@ -1,10 +0,0 @@
-{% load i18n %}{% blocktrans %}You're receiving this e-mail because your account on {{site_name}} is activated by site admin.{% endblocktrans %}
-
-{% trans "Please click the following link to log in:" %}
-{{login_url}}
-
-{% trans "Your username, in case you've forgotten:" %} {{ username }}
-
-{% trans "Thanks for using our site!" %}
-
-{% blocktrans %}The {{ site_name }} team{% endblocktrans %}
diff --git a/seahub/templates/sysadmin/user_activation_email_subject.txt b/seahub/templates/sysadmin/user_activation_email_subject.txt
deleted file mode 100644
index 7cfe762ed7..0000000000
--- a/seahub/templates/sysadmin/user_activation_email_subject.txt
+++ /dev/null
@@ -1 +0,0 @@
-{% load i18n %}{% blocktrans %}Your account on {{site_name}} is activated{% endblocktrans %}
diff --git a/seahub/templates/sysadmin/user_add_email.html b/seahub/templates/sysadmin/user_add_email.html
index 3638fdec2f..3398f4e70f 100644
--- a/seahub/templates/sysadmin/user_add_email.html
+++ b/seahub/templates/sysadmin/user_add_email.html
@@ -10,22 +10,19 @@
 
 <p style="font-size:14px;color:#434144;">
 {% if org %}
-{% blocktrans with org_name=org.org_name %}You're receiving this e-mail because {{ user }} added you to organization "{{ org_name }}" on {{ site_name }}.{% endblocktrans%}
+{% blocktrans with org_name=org.org_name %}{{ user }} invited you to join organization "{{ org_name }}" on {{ site_name }}.{% endblocktrans%}
 {% else %}
-{% blocktrans %}You're receiving this e-mail because {{ user }} added you to {{ site_name }}.{% endblocktrans%}
+{% blocktrans %}{{ user }} invited you to join {{ site_name }}.{% endblocktrans%}
 {% endif %}
 </p>
 
 <p style="font-size:14px;color:#434144;">
-{% trans "Following is your account information:" %}<br />
+{% trans "Here is your account information:" %}<br />
 {% blocktrans %}Email: {{ email }}{% endblocktrans %}<br />
-{% blocktrans %}Password:  {{ password }}{% endblocktrans %}
+{% blocktrans %}Password: {{ password }}{% endblocktrans %}
 </p>
 
-<p style="font-size:14px;color:#434144;">
-{% trans "Please go to the following page and log in:" %}<br />
-{{ protocol }}://{{ domain }}{% url 'auth_login' %}
-</p>
+<a href="{{ service_url }}{% url 'auth_login' %}" target="_blank">{% trans "Log In" %}</a> 
 
 {% endautoescape %}
 
diff --git a/seahub/templates/sysadmin/user_reset_email.html b/seahub/templates/sysadmin/user_reset_email.html
index dbe1923128..73f197a28f 100644
--- a/seahub/templates/sysadmin/user_reset_email.html
+++ b/seahub/templates/sysadmin/user_reset_email.html
@@ -9,11 +9,7 @@
 <p style="color:#121214;font-size:14px;">{% trans "Hi," %}</p>
 
 <p style="font-size:14px;color:#434144;">
-{% blocktrans %}You're receiving this e-mail because staff has reset your password at {{ site_name }}. {% endblocktrans %}
-</p>
-
-<p style="font-size:14px;color:#434144;">
-{% blocktrans %}Your new password is {{ password }}, please modify your password as soon as possible.{% endblocktrans %}
+{% blocktrans %}Your password on {{ site_name }} has been reset. Now it is {{ password }}. Please change it as soon as possible. {% endblocktrans %}
 </p>
 
 {% endautoescape %}
diff --git a/seahub/views/__init__.py b/seahub/views/__init__.py
index 28303151e4..6eb2875769 100644
--- a/seahub/views/__init__.py
+++ b/seahub/views/__init__.py
@@ -18,7 +18,6 @@ from urllib import quote
 
 from django.core.cache import cache
 from django.core.urlresolvers import reverse
-from django.core.mail import send_mail
 from django.contrib import messages
 from django.contrib.sites.models import Site, RequestSite
 from django.db import IntegrityError
diff --git a/seahub/views/sysadmin.py b/seahub/views/sysadmin.py
index db841d2f4c..12ef117c08 100644
--- a/seahub/views/sysadmin.py
+++ b/seahub/views/sysadmin.py
@@ -33,7 +33,7 @@ from seahub.share.models import FileShare
 import seahub.settings as settings
 from seahub.settings import INIT_PASSWD, \
     SEND_EMAIL_ON_ADDING_SYSTEM_MEMBER, SEND_EMAIL_ON_RESETTING_USER_PASSWD
-from seahub.utils import get_site_scheme_and_netloc
+from seahub.utils import get_site_scheme_and_netloc, get_service_url
 
 logger = logging.getLogger(__name__)
 
@@ -407,20 +407,21 @@ def user_deactivate(request, user_id):
 def email_user_on_activation(user):
     """Send an email to user when admin activate his/her account.
     """
-    ctx_dict = {
-        "site_name": settings.SITE_NAME,
-        "login_url": "%s%s" % (get_site_scheme_and_netloc(),
-                               reverse('auth_login')),
-        "username": user.email,
+    service_url = get_service_url() 
+    site_name = settings.SITE_NAME
+
+    t = loader.get_template('sysadmin/user_activation_email.html')
+    c = {
+        'site_name': site_name,
+        'media_url': settings.MEDIA_URL,
+        'logo_path': settings.LOGO_PATH,
+        'service_url': service_url,
+        'username': user.email,
         }
-    subject = render_to_string('sysadmin/user_activation_email_subject.txt',
-                               ctx_dict)
-    # Email subject *must not* contain newlines
-    subject = ''.join(subject.splitlines())
-
-    message = render_to_string('sysadmin/user_activation_email.txt', ctx_dict)
-
-    user.email_user(subject, message, settings.DEFAULT_FROM_EMAIL)
+    msg = EmailMessage(_(u'Your account on s% is activated') % site_name, t.render(Context(c)),
+              None, [user.email])
+    msg.content_subtype = "html"
+    msg.send()
     
 @login_required
 @sys_staff_required
@@ -459,22 +460,19 @@ def send_user_reset_email(request, email, password):
     Send email when reset user password.
     """
     
-    use_https = request.is_secure()
-    domain = RequestSite(request).domain
+    service_url = get_service_url() 
+    site_name = settings.SITE_NAME
 
     t = loader.get_template('sysadmin/user_reset_email.html')
     c = {
         'email': email,
         'password': password,
-        'site_name': settings.SITE_NAME,
-        'media_url': settings.MEDIA_URL,
-        'logo_path': settings.LOGO_PATH,
-        'domain': domain,
-        'protocol': use_https and 'https' or 'http',
+        'site_name': site_name,
         'media_url': settings.MEDIA_URL,
         'logo_path': settings.LOGO_PATH,
+        'service_url': service_url,
         }
-    msg = EmailMessage(_(u'Password Reset'), t.render(Context(c)),
+    msg = EmailMessage(_(u'Password has been reset on %s') % site_name, t.render(Context(c)),
               None, [email])
     msg.content_subtype = "html"
     msg.send()
@@ -519,22 +517,21 @@ def user_reset(request, user_id):
 def send_user_add_mail(request, email, password):
     """Send email when add new user."""
     
-    use_https = request.is_secure()
-    domain = RequestSite(request).domain
-    
+    service_url = get_service_url() 
+    site_name = settings.SITE_NAME
+
     t = loader.get_template('sysadmin/user_add_email.html')
     c = {
         'user': request.user.username,
         'org': request.user.org,
         'email': email,
         'password': password,
-        'domain': domain,
-        'protocol': use_https and 'https' or 'http',
-        'site_name': settings.SITE_NAME,
+        'service_url': service_url,
+        'site_name': site_name,
         'media_url': settings.MEDIA_URL,
         'logo_path': settings.LOGO_PATH,
         }
-    msg = EmailMessage(_(u'Seafile Registration Information'), t.render(Context(c)),
+    msg = EmailMessage(_(u'You are invited to join %s') % site_name, t.render(Context(c)),
               None, [email])
     msg.content_subtype = "html"
     msg.send()