diff --git a/packages/mailer_old/.gitignore b/packages/mailer_old/.gitignore
deleted file mode 100644
index 9fd356af..00000000
--- a/packages/mailer_old/.gitignore
+++ /dev/null
@@ -1,102 +0,0 @@
-
-# Created by https://www.gitignore.io/api/node,visualstudiocode
-# Edit at https://www.gitignore.io/?templates=node,visualstudiocode
-
-### Node ###
-# Logs
-logs
-*.log
-npm-debug.log*
-yarn-debug.log*
-yarn-error.log*
-
-# Runtime data
-pids
-*.pid
-*.seed
-*.pid.lock
-
-# Directory for instrumented libs generated by jscoverage/JSCover
-lib-cov
-
-# Coverage directory used by tools like istanbul
-coverage
-
-# nyc test coverage
-.nyc_output
-
-# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
-.grunt
-
-# Bower dependency directory (https://bower.io/)
-bower_components
-
-# node-waf configuration
-.lock-wscript
-
-# Compiled binary addons (https://nodejs.org/api/addons.html)
-build/Release
-
-# Dependency directories
-node_modules/
-jspm_packages/
-dist/
-output/
-
-# TypeScript v1 declaration files
-typings/
-
-# Optional npm cache directory
-.npm
-
-# Optional eslint cache
-.eslintcache
-
-# Optional REPL history
-.node_repl_history
-
-# Output of 'npm pack'
-*.tgz
-
-# Yarn Integrity file
-.yarn-integrity
-
-# dotenv environment variables file
-.env
-.env.test
-
-# parcel-bundler cache (https://parceljs.org/)
-.cache
-
-# next.js build output
-.next
-
-# nuxt.js build output
-.nuxt
-
-# vuepress build output
-.vuepress/dist
-
-# Serverless directories
-.serverless/
-
-# FuseBox cache
-.fusebox/
-
-# DynamoDB Local files
-.dynamodb/
-
-### VisualStudioCode ###
-.vscode/*
-!.vscode/settings.json
-!.vscode/tasks.json
-!.vscode/launch.json
-!.vscode/extensions.json
-
-### VisualStudioCode Patch ###
-# Ignore all local history of files
-.history
-
-# End of https://www.gitignore.io/api/node,visualstudiocode
-
-documentation/
\ No newline at end of file
diff --git a/packages/mailer_old/.npmignore b/packages/mailer_old/.npmignore
deleted file mode 100644
index 3c9fb518..00000000
--- a/packages/mailer_old/.npmignore
+++ /dev/null
@@ -1,18 +0,0 @@
-# source
-lib
-test
-tests
-index.ts
-package-lock.json
-yarn.lock
-tslint.json
-tsconfig.json
-tsconfig*.json
-.prettierrc
-.eslintrc.js
-.eslintignore
-
-.vscode/
-
-*.js.map
-**/*.js.map
diff --git a/packages/mailer_old/.vscode/settings.json b/packages/mailer_old/.vscode/settings.json
deleted file mode 100644
index ee274540..00000000
--- a/packages/mailer_old/.vscode/settings.json
+++ /dev/null
@@ -1,6 +0,0 @@
-{
-  "typescript.preferences.importModuleSpecifier": "relative",
-  "typescript.preferences.quoteStyle": "single",
-  "editor.formatOnSave": true,
-  "jest.jestCommandLine": "yarn test"
-}
diff --git a/packages/mailer_old/README.md b/packages/mailer_old/README.md
deleted file mode 100644
index 1978ecf0..00000000
--- a/packages/mailer_old/README.md
+++ /dev/null
@@ -1,37 +0,0 @@
-# devon4ts_node
-
-[devonfw](https://www.devonfw.com/) is a platform which provides solutions to building business applications which combine best-in-class frameworks and libraries as well as industry proven practices and code conventions. devonfw is 100% Open Source (Apache License version 2.0) since the beginning of 2018.
-
-devon4ts_node is the NodeJS stack of devonfw. It allows you to build business applications (backends) using NodeJS technology in standardized way based on established best-practices.
-
-![License](https://img.shields.io/npm/l/@devon4ts_node/mailer)
-![License](https://img.shields.io/npm/v/@devon4ts_node/mailer)
-![License](https://img.shields.io/librariesio/release/npm/@devon4ts_node/mailer)
-![License](https://img.shields.io/npm/dt/@devon4ts_node/mailer)
-
-## devon4ts_node mailer
-
-This package contains the devon4ts_node mailer module. This module allows you to send emails in your devon4ts_node application in a easy way.
-
-## Documentation
-
-You can find all documentation in our [wiki](https://github.com/devonfw/devon4ts_node/wiki).
-
-## Code of conduct
-
-Visit [code of conduct document](https://github.com/devonfw/.github/blob/master/CODE_OF_CONDUCT.md).
-
-## Contributing guide
-
-Visit [contributing guide document](https://github.com/devonfw/.github/blob/master/CONTRIBUTING.asciidoc).
-
-## Key Principles
-
-Visit [key principles document](https://github.com/devonfw/.github/blob/master/key-principles.asciidoc).
-
-## Samples
-
-- [Employee example](https://github.com/devonfw-sample/devon4ts_node-samples/tree/develop/employee): simple backend example for a employee management application.
-- [Components example](https://github.com/devonfw-sample/devon4ts_node/tree/develop/components-example): simple backend example which will show you the execution order of the devon4ts_node components.
-- [GraphQL example](https://github.com/devonfw-sample/devon4ts_node/tree/develop/graphql): simple GraphQL example with starter configuration.
-- [My Thai Star](https://github.com/devonfw/my-thai-star/tree/develop/node): realistic example about the management of a restaurant. This example has also a frontend and it is compatible with other devonfw stacks.
diff --git a/packages/mailer_old/lib/index.ts b/packages/mailer_old/lib/index.ts
deleted file mode 100644
index 484b6b54..00000000
--- a/packages/mailer_old/lib/index.ts
+++ /dev/null
@@ -1,4 +0,0 @@
-export * from './mailer.constants';
-export * from './mailer.module';
-export * from './mailer.service';
-export * from './mailer.types';
diff --git a/packages/mailer_old/lib/mailer.constants.ts b/packages/mailer_old/lib/mailer.constants.ts
deleted file mode 100644
index 49db80b4..00000000
--- a/packages/mailer_old/lib/mailer.constants.ts
+++ /dev/null
@@ -1,2 +0,0 @@
-export const MAILER_TRANSPORT_PROVIDER_NAME = 'NODEMAILER_TRANSPORT';
-export const MAILER_OPTIONS_PROVIDER_NAME = 'MailerModuleOptions';
diff --git a/packages/mailer_old/lib/mailer.module.ts b/packages/mailer_old/lib/mailer.module.ts
deleted file mode 100644
index 67ac8fe0..00000000
--- a/packages/mailer_old/lib/mailer.module.ts
+++ /dev/null
@@ -1,63 +0,0 @@
-import { DynamicModule, Module } from '@nestjs/common';
-import * as nodemailer from 'nodemailer';
-import { MAILER_OPTIONS_PROVIDER_NAME, MAILER_TRANSPORT_PROVIDER_NAME } from './mailer.constants';
-import { MailerService } from './mailer.service';
-import { MailerModuleAsyncOptions, MailerModuleOptions } from './mailer.types';
-
-@Module({
-  providers: [MailerService],
-  exports: [MailerService],
-})
-export class MailerModule {
-  private static defaultOptions: MailerModuleOptions = {
-    hbsOptions: {
-      templatesDir: './templates/views',
-    },
-    mailOptions: { streamTransport: true, newline: 'windows' },
-    emailFrom: 'noreply@capgemini.com',
-  };
-
-  static register(options?: MailerModuleOptions): DynamicModule {
-    return {
-      module: MailerModule,
-      providers: [
-        {
-          provide: MAILER_OPTIONS_PROVIDER_NAME,
-          useValue: options || this.defaultOptions,
-        },
-        {
-          provide: MAILER_TRANSPORT_PROVIDER_NAME,
-          useFactory: (opts: MailerModuleOptions): any => {
-            return nodemailer.createTransport(opts.mailOptions);
-          },
-          inject: [MAILER_OPTIONS_PROVIDER_NAME],
-        },
-      ],
-      exports: [MAILER_TRANSPORT_PROVIDER_NAME],
-    };
-  }
-
-  static registerAsync(options: MailerModuleAsyncOptions): DynamicModule {
-    const transportProvider = {
-      provide: MAILER_TRANSPORT_PROVIDER_NAME,
-      useFactory: (mailerOptions: MailerModuleOptions): nodemailer.Transporter => {
-        const opts = mailerOptions || this.defaultOptions;
-        return nodemailer.createTransport(opts.mailOptions);
-      },
-      inject: [MAILER_OPTIONS_PROVIDER_NAME],
-    };
-
-    const optionsProvider = {
-      provide: MAILER_OPTIONS_PROVIDER_NAME,
-      useFactory: options.useFactory,
-      inject: options.inject || [],
-    };
-
-    return {
-      module: MailerModule,
-      imports: options.imports,
-      providers: [transportProvider, optionsProvider],
-      exports: [transportProvider],
-    };
-  }
-}
diff --git a/packages/mailer_old/lib/mailer.service.ts b/packages/mailer_old/lib/mailer.service.ts
deleted file mode 100644
index c1c03219..00000000
--- a/packages/mailer_old/lib/mailer.service.ts
+++ /dev/null
@@ -1,168 +0,0 @@
-import { Inject, Injectable, OnModuleDestroy, OnModuleInit } from '@nestjs/common';
-import { Transporter, SentMessageInfo, SendMailOptions } from 'nodemailer';
-import { MAILER_OPTIONS_PROVIDER_NAME, MAILER_TRANSPORT_PROVIDER_NAME } from './mailer.constants';
-import { MailerModuleOptions, IHandlebarsOptions } from './mailer.types';
-import * as fs from 'fs-extra';
-import { join } from 'path';
-
-@Injectable()
-export class MailerService implements OnModuleInit, OnModuleDestroy {
-  private hbsOptions: IHandlebarsOptions = {
-    templatesDir: join(__dirname, '../../../../templates/views'),
-    extension: '.handlebars',
-  };
-  private hbs: any;
-  private readonly templates: {
-    [T: string]: Handlebars.TemplateDelegate<any>;
-  } = {};
-
-  constructor(
-    @Inject(MAILER_TRANSPORT_PROVIDER_NAME)
-    readonly transporter: Transporter,
-    @Inject(MAILER_OPTIONS_PROVIDER_NAME)
-    private readonly options: MailerModuleOptions,
-  ) {}
-
-  async onModuleInit(): Promise<void> {
-    if (this.options.hbsOptions) {
-      const hbs = await import('handlebars');
-
-      this.hbs = hbs.create();
-
-      Object.assign(this.hbsOptions, this.options.hbsOptions);
-
-      if (this.hbsOptions.extension![0] !== '.') {
-        this.hbsOptions.extension = '.' + this.hbsOptions.extension;
-      }
-
-      this.addPartials();
-
-      this.addHelpers();
-
-      this.addTemplates();
-    }
-  }
-
-  onModuleDestroy(): void {
-    this.transporter.close();
-  }
-
-  async sendPlainMail(emailOptions: SendMailOptions): Promise<SentMessageInfo>;
-  async sendPlainMail(to: string, subject: string, mail: string): Promise<SentMessageInfo>;
-  async sendPlainMail(
-    firstParam: string | SendMailOptions,
-    secondParam?: string,
-    thirdParam?: string,
-  ): Promise<SentMessageInfo> {
-    const mailOptions: SendMailOptions = {
-      from: this.options.emailFrom,
-    };
-
-    if (typeof firstParam === 'string') {
-      Object.assign(mailOptions, {
-        from: this.options.emailFrom,
-        to: firstParam,
-        subject: secondParam,
-        html: thirdParam,
-      });
-    } else {
-      Object.assign(mailOptions, firstParam);
-    }
-
-    return await this.transporter.sendMail(mailOptions);
-  }
-
-  async sendTemplateMail(
-    emailOptions: SendMailOptions,
-    templateName: string,
-    emailData: any,
-    hbsOptions?: RuntimeOptions,
-  ): Promise<SentMessageInfo>;
-  async sendTemplateMail(
-    to: string,
-    subject: string,
-    templateName: string,
-    emailData: any,
-    hbsOptions?: RuntimeOptions,
-  ): Promise<SentMessageInfo>;
-  sendTemplateMail(
-    firstParam: string | SendMailOptions,
-    secondParam?: string,
-    thirdParam?: string,
-    fourthParam?: any,
-    fifthParam?: RuntimeOptions,
-  ): Promise<SentMessageInfo> {
-    const mailOptions: SendMailOptions = {
-      from: this.options.emailFrom,
-    };
-
-    if (typeof firstParam === 'string') {
-      Object.assign(mailOptions, {
-        from: this.options.emailFrom,
-        to: firstParam,
-        subject: secondParam,
-      });
-    } else {
-      Object.assign(mailOptions, firstParam);
-    }
-
-    if (thirdParam && typeof firstParam === 'string') {
-      mailOptions.html = this.templates[thirdParam!](fourthParam, fifthParam);
-    } else {
-      mailOptions.html = this.templates[secondParam!](thirdParam, fourthParam);
-    }
-
-    return this.transporter.sendMail(mailOptions);
-  }
-
-  addTemplate(name: string, template: string, options?: CompileOptions): void {
-    this.templates[name] = this.hbs.compile(template, options);
-  }
-
-  registerPartial(name: string, partial: Handlebars.Template<any>): void {
-    this.hbs.registerPartial(name, partial);
-  }
-
-  registerHelper(name: string, helper: Handlebars.HelperDelegate): void {
-    this.hbs.registerHelper(name, helper);
-  }
-
-  private addHelpers(): void {
-    if (this.hbsOptions.helpers && this.hbsOptions.helpers.length) {
-      this.hbsOptions.helpers.forEach(helper => {
-        this.hbs.registerHelper(helper.name, helper.func);
-      });
-    }
-  }
-
-  private addTemplates(): void {
-    if (fs.existsSync(this.hbsOptions.templatesDir)) {
-      const templates = fs.readdirSync(this.hbsOptions!.templatesDir, {
-        withFileTypes: true,
-      });
-      templates
-        .filter(value => value.name.endsWith(this.hbsOptions!.extension!) && value.isFile())
-        .forEach(element => {
-          this.templates[element.name.substring(0, element.name.indexOf('.'))] = this.hbs.compile(
-            fs.readFileSync(join(this.hbsOptions.templatesDir, element.name)).toString(),
-          );
-        });
-    }
-  }
-
-  private addPartials(): void {
-    if (this.hbsOptions.partialsDir && fs.existsSync(this.hbsOptions.partialsDir)) {
-      const partials = fs.readdirSync(this.hbsOptions!.partialsDir, {
-        withFileTypes: true,
-      });
-      partials
-        .filter(value => value.name.endsWith(this.hbsOptions!.extension!) && value.isFile())
-        .forEach(element => {
-          this.hbs.registerPartial(
-            element.name.substring(0, element.name.indexOf('.')),
-            fs.readFileSync(join(this.hbsOptions.partialsDir!, element.name)).toString(),
-          );
-        });
-    }
-  }
-}
diff --git a/packages/mailer_old/lib/mailer.types.ts b/packages/mailer_old/lib/mailer.types.ts
deleted file mode 100644
index c904b2d3..00000000
--- a/packages/mailer_old/lib/mailer.types.ts
+++ /dev/null
@@ -1,76 +0,0 @@
-import * as nodemailer from 'nodemailer';
-import * as JSONTransport from 'nodemailer/lib/json-transport';
-import * as SendmailTransport from 'nodemailer/lib/sendmail-transport';
-import * as SESTransport from 'nodemailer/lib/ses-transport';
-import * as SMTPPool from 'nodemailer/lib/smtp-pool';
-import * as SMTPTransport from 'nodemailer/lib/smtp-transport';
-import * as StreamTransport from 'nodemailer/lib/stream-transport';
-import { ModuleMetadata } from '@nestjs/common/interfaces';
-import * as Handlebars from 'handlebars';
-
-// Copied from Handlebars, they do not export it
-export interface ICompileOptions {
-  data?: boolean;
-  compat?: boolean;
-  knownHelpers?: {
-    helperMissing?: boolean;
-    blockHelperMissing?: boolean;
-    each?: boolean;
-    if?: boolean;
-    unless?: boolean;
-    with?: boolean;
-    log?: boolean;
-    lookup?: boolean;
-  };
-  knownHelpersOnly?: boolean;
-  noEscape?: boolean;
-  strict?: boolean;
-  assumeObjects?: boolean;
-  preventIndent?: boolean;
-  ignoreStandalone?: boolean;
-  explicitPartialContext?: boolean;
-}
-
-// Copied from handlebars, they do not export it
-export interface IPrecompileOptions extends ICompileOptions {
-  srcName?: string;
-  destName?: string;
-}
-
-export type MailerModuleOptions = IMailerModuleOptions;
-
-interface IMailerModuleOptions {
-  hbsOptions?: IHandlebarsOptions;
-  mailOptions?:
-    | nodemailer.TransportOptions
-    | SESTransport.Options
-    | JSONTransport.Options
-    | StreamTransport.Options
-    | SendmailTransport.Options
-    | SMTPPool.Options
-    | SMTPTransport.Options
-    | string;
-  emailFrom: string;
-}
-
-export interface IHandlebarsOptions {
-  templatesDir: string;
-  extension?: string;
-  partialsDir?: string;
-  helpers?: IHelperFunction[];
-  compilerOptions?: ICompileOptions;
-}
-
-export type HelperFunction = IHelperFunction;
-
-interface IHelperFunction {
-  name: string;
-  func: Handlebars.HelperDelegate;
-}
-
-export type MailerModuleAsyncOptions = IMailerModuleAsyncOptions;
-
-interface IMailerModuleAsyncOptions extends Pick<ModuleMetadata, 'imports'> {
-  useFactory: (...args: any[]) => Promise<MailerModuleOptions> | MailerModuleOptions;
-  inject?: any[];
-}
diff --git a/packages/mailer_old/package.json b/packages/mailer_old/package.json
deleted file mode 100644
index 5e2c53de..00000000
--- a/packages/mailer_old/package.json
+++ /dev/null
@@ -1,66 +0,0 @@
-{
-  "name": "@devon4ts_node/mailer",
-  "version": "5.0.1",
-  "description": "devon4ts_node module that allows you to send emails in a easy way.",
-  "main": "dist/index.js",
-  "scripts": {
-    "build": "rm -rf dist && tsc -p tsconfig.build.json",
-    "prepublish:npm": "npm run build",
-    "publish:npm": "npm publish --access public",
-    "prepublish:next": "npm run build",
-    "publish:next": "npm publish --access public --tag next",
-    "test": "jest",
-    "format": "prettier --write \"lib/**/*.ts\"",
-    "lint": "eslint lib/**/*.ts --fix"
-  },
-  "keywords": [
-    "nestjs",
-    "devon4ts_node",
-    "devonfw"
-  ],
-  "author": {
-    "name": "Capgemini",
-    "url": "https://www.capgemini.com/"
-  },
-  "contributors": [
-    "Dario Rodriguez Gonzalez <dario.rodriguez-gonzalez@capgemini.com>"
-  ],
-  "license": "Apache-2.0",
-  "dependencies": {
-    "fs-extra": "^10.1.0",
-    "nodemailer": "^6.7.5"
-  },
-  "peerDependencies": {
-    "@nestjs/common": "^9.0.0",
-    "@nestjs/core": "^9.0.0",
-    "handlebars": "^4.0.0",
-    "reflect-metadata": "^0.1.13",
-    "rxjs": "^7.0.0"
-  },
-  "repository": {
-    "type": "git",
-    "url": "git+https://github.com/devonfw/devon4ts_node.git"
-  },
-  "bugs": {
-    "url": "https://github.com/devonfw/devon4ts_node/issues"
-  },
-  "homepage": "https://github.com/devonfw/devon4ts_node",
-  "jest": {
-    "moduleFileExtensions": [
-      "js",
-      "json",
-      "ts"
-    ],
-    "roots": [
-      "lib",
-      "test"
-    ],
-    "testRegex": ".spec.ts$",
-    "transform": {
-      "^.+\\.(t|j)s$": "ts-jest"
-    },
-    "coverageDirectory": "./coverage",
-    "testEnvironment": "node"
-  },
-  "gitHead": "1f351bcc0fbad70f9c25fa73a398a538ca0c8e55"
-}
\ No newline at end of file
diff --git a/packages/mailer_old/test/mailer.service.spec.ts b/packages/mailer_old/test/mailer.service.spec.ts
deleted file mode 100644
index f052a44b..00000000
--- a/packages/mailer_old/test/mailer.service.spec.ts
+++ /dev/null
@@ -1,159 +0,0 @@
-import { Test, TestingModule } from '@nestjs/testing';
-import { Transporter } from 'nodemailer';
-import { join } from 'path';
-import { MAILER_OPTIONS_PROVIDER_NAME, MAILER_TRANSPORT_PROVIDER_NAME } from '../lib/mailer.constants';
-import { MailerService } from '../lib/mailer.service';
-
-describe('MailerService', () => {
-  let service: MailerService;
-  let transporter: Pick<Transporter, 'sendMail'>;
-
-  beforeEach(async () => {
-    transporter = {
-      sendMail: jest.fn(),
-    };
-    const module: TestingModule = await Test.createTestingModule({
-      providers: [
-        MailerService,
-        {
-          provide: MAILER_TRANSPORT_PROVIDER_NAME,
-          useValue: transporter,
-        },
-        {
-          provide: MAILER_OPTIONS_PROVIDER_NAME,
-          useValue: {
-            emailFrom: 'someone@whatever.com',
-            hbsOptions: {
-              templatesDir: join(__dirname, './templates/views'),
-              partialsDir: join(__dirname, './templates/partials'),
-            },
-            mailOptions: {},
-          },
-        },
-      ],
-    }).compile();
-
-    service = module.get<MailerService>(MailerService);
-    await service.onModuleInit();
-  });
-
-  afterEach(() => {
-    jest.clearAllMocks();
-  });
-
-  it('should be created and register all templates, partials and helpers', () => {
-    expect(service).toBeDefined();
-  });
-
-  it('should send a plain text email using the provided transporter providing an emailOptions object', () => {
-    const input = {
-      to: 'to@to.com',
-      subject: 'subject',
-      text: 'text',
-    };
-
-    const expected = { ...input, from: 'someone@whatever.com' };
-
-    service.sendPlainMail(input);
-    expect(transporter.sendMail).toBeCalledWith(expected);
-  });
-
-  it('should send a plain text email using the provided transporter providing all params', () => {
-    const input = {
-      to: 'to@to.com',
-      subject: 'subject',
-      html: 'text',
-    };
-
-    const expected = { ...input, from: 'someone@whatever.com' };
-
-    service.sendPlainMail(input.to, input.subject, input.html);
-    expect(transporter.sendMail).toBeCalledWith(expected);
-  });
-
-  it('should send email from a handlebars template by using the provided transporter providing emailOptions object', () => {
-    const input = {
-      to: 'to@to.com',
-      subject: 'subject',
-    };
-
-    const expected = {
-      ...input,
-      from: 'someone@whatever.com',
-      html: `<!DOCTYPE html>
-<html lang=\"en\" xml:lang=\"en\">
-
-<head>
-  <meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\">
-  <meta name=\"viewport\" content=\"width=device-width\">
-  <title>my title</title>
-</head>
-
-<body>
-  <h1>Hello</h1>
-  <p>This is a test</p>
-</body>
-
-</html>
-`,
-    };
-
-    service.sendTemplateMail(input, 'test', { title: 'my title' });
-    expect(transporter.sendMail).toBeCalledWith(expected);
-  });
-
-  it('should register a template and should be ready to use', () => {
-    const input = {
-      to: 'to@to.com',
-      subject: 'subject',
-    };
-
-    const expected = {
-      ...input,
-      from: 'someone@whatever.com',
-      html: `My view`,
-    };
-
-    service.addTemplate('my-view', `My view`);
-    service.sendTemplateMail(input, 'my-view', {});
-    expect(transporter.sendMail).toBeCalledWith(expected);
-  });
-
-  it('should register a partial and should be ready to use', () => {
-    const input = {
-      to: 'to@to.com',
-      subject: 'subject',
-    };
-
-    const expected = {
-      ...input,
-      from: 'someone@whatever.com',
-      html: `this is my partial: My view`,
-    };
-
-    service.addTemplate('my-view', `{{#> my-partial }}My view{{/my-partial}}`);
-    service.registerPartial('my-partial', `this is my partial: {{> @partial-block }}`);
-    service.sendTemplateMail(input, 'my-view', {});
-    expect(transporter.sendMail).toBeCalledWith(expected);
-  });
-
-  it('should register a helper and should be ready to use', () => {
-    const input = {
-      to: 'to@to.com',
-      subject: 'subject',
-    };
-
-    const expected = {
-      ...input,
-      from: 'someone@whatever.com',
-      html: `<b>My view</b>`,
-    };
-
-    service.registerHelper('bold', function (options) {
-      return '<b>' + options.fn(this) + '</b>';
-    });
-    service.addTemplate('my-view', `{{#bold}}My view{{/bold}}`);
-    service.sendTemplateMail(input, 'my-view', {});
-    expect(transporter.sendMail).toBeCalledWith(expected);
-  });
-});
diff --git a/packages/mailer_old/test/templates/partials/layout.handlebars b/packages/mailer_old/test/templates/partials/layout.handlebars
deleted file mode 100644
index ccdca815..00000000
--- a/packages/mailer_old/test/templates/partials/layout.handlebars
+++ /dev/null
@@ -1,14 +0,0 @@
-<!DOCTYPE html>
-<html lang="en" xml:lang="en">
-
-<head>
-  <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
-  <meta name="viewport" content="width=device-width">
-  <title>{{ title }}</title>
-</head>
-
-<body>
-  {{> @partial-block }}
-</body>
-
-</html>
diff --git a/packages/mailer_old/test/templates/views/test.handlebars b/packages/mailer_old/test/templates/views/test.handlebars
deleted file mode 100644
index 4affa89b..00000000
--- a/packages/mailer_old/test/templates/views/test.handlebars
+++ /dev/null
@@ -1,4 +0,0 @@
-{{#> layout }}
-<h1>Hello</h1>
-<p>This is a test</p>
-{{/layout}}
diff --git a/packages/mailer_old/tsconfig.build.json b/packages/mailer_old/tsconfig.build.json
deleted file mode 100644
index 2ff0226c..00000000
--- a/packages/mailer_old/tsconfig.build.json
+++ /dev/null
@@ -1,12 +0,0 @@
-{
-  "compilerOptions": {
-    "noImplicitThis": true,
-  },
-  "extends": "./tsconfig.json",
-  "exclude": [
-    "node_modules",
-    "dist",
-    "./**/*.spec.ts",
-    "test"
-  ]
-}
diff --git a/packages/mailer_old/tsconfig.json b/packages/mailer_old/tsconfig.json
deleted file mode 100644
index 4b938201..00000000
--- a/packages/mailer_old/tsconfig.json
+++ /dev/null
@@ -1,19 +0,0 @@
-{
-  "extends": "../../tsconfig.json",
-  "compilerOptions": {
-    "noImplicitAny": false,
-    "sourceMap": false,
-    "outDir": "./dist",
-    "baseUrl": "./",
-    "incremental": false,
-    "noImplicitThis": false,
-    "types": [
-      "node",
-      "jest"
-    ]
-  },
-  "include": [
-    "./lib/**/*",
-    "./test/**/*"
-  ]
-}