diff --git a/modoboa/core/models.py b/modoboa/core/models.py
index 7be04bf6f..57faece90 100644
--- a/modoboa/core/models.py
+++ b/modoboa/core/models.py
@@ -360,7 +360,7 @@ class User(PermissionsMixin):
             self.password = row[2].strip()
         self.first_name = row[3].strip()
         self.last_name = row[4].strip()
-        self.is_active = (row[5].strip() == 'True')
+        self.is_active = (row[5].strip() in ["True", "1", "yes", "y"])
         self.save(creator=user)
         self.set_role(role)
         if len(row) < 8:
diff --git a/modoboa/extensions/admin/models/alias.py b/modoboa/extensions/admin/models/alias.py
index cbc6879c9..4ced8b994 100644
--- a/modoboa/extensions/admin/models/alias.py
+++ b/modoboa/extensions/admin/models/alias.py
@@ -166,7 +166,7 @@ class Alias(AdminObject):
             raise Conflict
         self.address = localpart
         self.domain = domain
-        self.enabled = (row[2].strip() == 'True')
+        self.enabled = (row[2].strip() in ["True", "1", "yes", "y"])
         int_rcpts = []
         ext_rcpts = []
         for rcpt in row[3:]:
diff --git a/modoboa/extensions/admin/models/domain.py b/modoboa/extensions/admin/models/domain.py
index 02e50731e..5d8566d62 100644
--- a/modoboa/extensions/admin/models/domain.py
+++ b/modoboa/extensions/admin/models/domain.py
@@ -158,7 +158,7 @@ class Domain(AdminObject):
             self.quota = int(row[2].strip())
         except ValueError:
             raise BadRequest(_("Invalid quota value for domain '%s'" % self.name))
-        self.enabled = (row[3].strip() == 'True')
+        self.enabled = (row[3].strip() in ["True", "1", "yes", "y"])
         self.save(creator=user)
 
     def to_csv(self, csvwriter):
diff --git a/modoboa/extensions/admin/models/domain_alias.py b/modoboa/extensions/admin/models/domain_alias.py
index 29fe93037..51b542dd0 100644
--- a/modoboa/extensions/admin/models/domain_alias.py
+++ b/modoboa/extensions/admin/models/domain_alias.py
@@ -50,7 +50,7 @@ class DomainAlias(AdminObject):
             self.target = Domain.objects.get(name=domname)
         except Domain.DoesNotExist:
             raise BadRequest(_("Unknown domain %s" % domname))
-        self.enabled = row[3].strip() == 'True'
+        self.enabled = row[3].strip() in ["True", "1", "yes", "y"]
         self.save(creator=user)
 
     def to_csv(self, csvwriter):