diff --git a/services/auth/reverseproxy.go b/services/auth/reverseproxy.go
index 05d6af78f1745..03fc5351b02db 100644
--- a/services/auth/reverseproxy.go
+++ b/services/auth/reverseproxy.go
@@ -1,5 +1,5 @@
 // Copyright 2014 The Gogs Authors. All rights reserved.
-// Copyright 2019 The Gitea Authors. All rights reserved.
+// Copyright 2022 The Gitea Authors. All rights reserved.
 // Use of this source code is governed by a MIT-style
 // license that can be found in the LICENSE file.
 
@@ -14,7 +14,6 @@ import (
 	"code.gitea.io/gitea/modules/setting"
 	"code.gitea.io/gitea/modules/util"
 	"code.gitea.io/gitea/modules/web/middleware"
-	"code.gitea.io/gitea/services/mailer"
 
 	gouuid "github.com/google/uuid"
 )
@@ -120,7 +119,5 @@ func (r *ReverseProxy) newUser(req *http.Request) *user_model.User {
 		return nil
 	}
 
-	mailer.SendRegisterNotifyMail(user)
-
 	return user
 }
diff --git a/services/auth/source/ldap/source_authenticate.go b/services/auth/source/ldap/source_authenticate.go
index 785cb8ed31731..c25a3f1c08d7a 100644
--- a/services/auth/source/ldap/source_authenticate.go
+++ b/services/auth/source/ldap/source_authenticate.go
@@ -1,4 +1,4 @@
-// Copyright 2021 The Gitea Authors. All rights reserved.
+// Copyright 2022 The Gitea Authors. All rights reserved.
 // Use of this source code is governed by a MIT-style
 // license that can be found in the LICENSE file.
 
@@ -14,7 +14,6 @@ import (
 	"code.gitea.io/gitea/models/organization"
 	user_model "code.gitea.io/gitea/models/user"
 	"code.gitea.io/gitea/modules/util"
-	"code.gitea.io/gitea/services/mailer"
 	user_service "code.gitea.io/gitea/services/user"
 )
 
@@ -105,8 +104,6 @@ func (source *Source) Authenticate(user *user_model.User, userName, password str
 		return user, err
 	}
 
-	mailer.SendRegisterNotifyMail(user)
-
 	if isAttributeSSHPublicKeySet && asymkey_model.AddPublicKeysBySource(user, source.authSource, sr.SSHPublicKey) {
 		err = asymkey_model.RewriteAllPublicKeys()
 	}