diff --git a/application/src/main/java/org/thingsboard/server/controller/MailConfigTemplateController.java b/application/src/main/java/org/thingsboard/server/controller/MailConfigTemplateController.java
index fc13edd3d7..09aed4fee3 100644
--- a/application/src/main/java/org/thingsboard/server/controller/MailConfigTemplateController.java
+++ b/application/src/main/java/org/thingsboard/server/controller/MailConfigTemplateController.java
@@ -16,45 +16,21 @@
 package org.thingsboard.server.controller;
 
 import com.fasterxml.jackson.databind.JsonNode;
-import com.nimbusds.jose.shaded.json.JSONObject;
 import io.swagger.annotations.ApiOperation;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
-import org.apache.commons.io.FileUtils;
-import org.apache.commons.lang3.CharEncoding;
-import org.springframework.beans.factory.annotation.Value;
-import org.springframework.core.io.ClassPathResource;
-import org.springframework.http.HttpStatus;
 import org.springframework.security.access.prepost.PreAuthorize;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestMethod;
 import org.springframework.web.bind.annotation.ResponseBody;
 import org.springframework.web.bind.annotation.RestController;
-import org.thingsboard.common.util.JacksonUtil;
-import org.thingsboard.server.common.data.ResourceType;
-import org.thingsboard.server.common.data.TbResource;
 import org.thingsboard.server.common.data.exception.ThingsboardException;
-import org.thingsboard.server.common.data.id.TenantId;
-import org.thingsboard.server.dao.settings.AdminSettingsService;
 import org.thingsboard.server.queue.util.TbCoreComponent;
 import org.thingsboard.server.service.mail.TbMailConfigTemplateService;
 import org.thingsboard.server.service.security.permission.Operation;
 import org.thingsboard.server.service.security.permission.Resource;
-import com.fasterxml.jackson.databind.ObjectMapper;
-import org.springframework.core.io.ClassPathResource;
-import org.springframework.http.MediaType;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.ResponseBody;
-import org.springframework.web.bind.annotation.RestController;
 
-import java.io.File;
 import java.io.IOException;
-import java.io.InputStream;
-import java.nio.file.DirectoryStream;
-import java.nio.file.Files;
-import java.nio.file.Path;
-import java.nio.file.Paths;
-import java.util.Base64;
 
 import static org.thingsboard.server.controller.ControllerConstants.SYSTEM_OR_TENANT_AUTHORITY_PARAGRAPH;
 
@@ -64,9 +40,7 @@ import static org.thingsboard.server.controller.ControllerConstants.SYSTEM_OR_TE
 @RequestMapping("/api/mail/config/template")
 @Slf4j
 public class MailConfigTemplateController extends BaseController {
-    private static final String MAIL_CONFIG_TEMPLATE_ID = "mailConfigTemplateId";
     private static final String MAIL_CONFIG_TEMPLATE_DEFINITION = "Mail configuration template is set of default smtp settings for mail server that specific provider supports";
-
     private final TbMailConfigTemplateService mailConfigTemplateService;
 
     @ApiOperation(value = "Get the list of all OAuth2 client registration templates (getClientRegistrationTemplates)" + SYSTEM_OR_TENANT_AUTHORITY_PARAGRAPH,