diff --git a/apps/api/src/intra-auth/intra-auth.module.ts b/apps/api/src/intra-auth/intra-auth.module.ts
index 004a9fce..03f5b64a 100644
--- a/apps/api/src/intra-auth/intra-auth.module.ts
+++ b/apps/api/src/intra-auth/intra-auth.module.ts
@@ -1,30 +1,16 @@
+import { MailModule } from '@api/mail/mail.module';
 import { UserModule } from '@api/user/user.module';
 import { CacheModule } from '@app/common/cache/cache.module';
 import { IntraAuth } from '@app/entity/intra-auth/intra-auth.entity';
 import { Module } from '@nestjs/common';
-import { ConfigModule, ConfigService } from '@nestjs/config';
+import { ConfigModule } from '@nestjs/config';
 import { TypeOrmModule } from '@nestjs/typeorm';
 import { IntraAuthController } from './intra-auth.controller';
 import { IntraAuthService } from './intra-auth.service';
-import StibeeService from './stibee.service';
 
 @Module({
-  imports: [UserModule, CacheModule, TypeOrmModule.forFeature([IntraAuth]), ConfigModule],
+  imports: [UserModule, CacheModule, TypeOrmModule.forFeature([IntraAuth]), ConfigModule, MailModule],
   controllers: [IntraAuthController],
-  providers: [
-    IntraAuthService,
-    {
-      provide: 'MailService',
-      inject: [ConfigService],
-      useFactory: async (config: ConfigService) => {
-        return new StibeeService(config);
-      },
-    },
-    {
-      provide: 'UnsubscribeStibeeService',
-      useClass: StibeeService,
-    },
-  ],
-  exports: [IntraAuthService],
+  providers: [IntraAuthService],
 })
 export class IntraAuthModule {}
diff --git a/apps/api/src/intra-auth/intra-auth.service.ts b/apps/api/src/intra-auth/intra-auth.service.ts
index 3d9c181c..0a13eb00 100644
--- a/apps/api/src/intra-auth/intra-auth.service.ts
+++ b/apps/api/src/intra-auth/intra-auth.service.ts
@@ -1,8 +1,11 @@
 import {
   CADET_ALREADY_EXIST_ERROR_MESSAGE,
+  EMAIL,
   NOT_EXIST_TOKEN_ERROR_MESSAGE,
   SIGNIN_ALREADY_AUTH_ERROR_MESSAGE,
 } from '@api/intra-auth/intra-auth.constant';
+import { MailService, MAIL_SERVICE_TOKEN } from '@api/mail/mail.service';
+import { UnsubscribeStibeeService, UnsubscribeStibeeServiceToken } from '@api/mail/unsubscribe-stibee.service';
 import { UserService } from '@api/user/user.service';
 import { CacheService } from '@app/common/cache/cache.service';
 import { IntraAuthMailDto } from '@app/common/cache/dto/intra-auth.dto';
@@ -13,15 +16,18 @@ import { ForbiddenException, Inject, Injectable } from '@nestjs/common';
 import { InjectRepository } from '@nestjs/typeorm';
 import { Repository } from 'typeorm';
 import { getCode } from './intra-auth.utils';
-import MailService from './mail.service';
-import UnsubscribeStibeeService from './unsubscribe-stibee.service';
 
 @Injectable()
 export class IntraAuthService {
   constructor(
-    @Inject('MailService') private readonly mailService: MailService,
-    @Inject('UnsubscribeStibeeService') private readonly unsubscribeStibeeService: UnsubscribeStibeeService,
+    @Inject(MAIL_SERVICE_TOKEN)
+    private readonly mailService: MailService,
+
+    @Inject(UnsubscribeStibeeServiceToken)
+    private readonly unsubscribeStibeeService: UnsubscribeStibeeService,
+
     private readonly userService: UserService,
+
     private readonly cacheService: CacheService,
 
     @InjectRepository(IntraAuth)
@@ -40,7 +46,7 @@ export class IntraAuthService {
 
     await this.cacheService.setIntraAuthMailData(code, intraAuthMailDto);
 
-    await this.mailService.send(intraId, code, user.nickname);
+    await this.mailService.send(`${intraId}@${EMAIL}`, intraId, code, user.nickname);
   }
 
   async getAuth(code: string): Promise<void | never> {
diff --git a/apps/api/src/intra-auth/mail.service.ts b/apps/api/src/intra-auth/mail.service.ts
deleted file mode 100644
index 0c2cd323..00000000
--- a/apps/api/src/intra-auth/mail.service.ts
+++ /dev/null
@@ -1,3 +0,0 @@
-export default interface MailService {
-  send(name: string, code: string, githubId: string);
-}
diff --git a/apps/api/src/intra-auth/unsubscribe-stibee.service.ts b/apps/api/src/intra-auth/unsubscribe-stibee.service.ts
deleted file mode 100644
index dfd69a52..00000000
--- a/apps/api/src/intra-auth/unsubscribe-stibee.service.ts
+++ /dev/null
@@ -1,3 +0,0 @@
-export default interface UnsubscribeStibeeService {
-  unsubscribe(name: string);
-}
diff --git a/apps/api/src/mail/mail.module.ts b/apps/api/src/mail/mail.module.ts
new file mode 100644
index 00000000..5498e0d8
--- /dev/null
+++ b/apps/api/src/mail/mail.module.ts
@@ -0,0 +1,23 @@
+import { Module } from '@nestjs/common';
+import { ConfigService } from '@nestjs/config';
+import { MAIL_SERVICE_TOKEN } from './mail.service';
+import StibeeService from './stibee.service';
+import { UnsubscribeStibeeServiceToken } from './unsubscribe-stibee.service';
+
+@Module({
+  providers: [
+    {
+      provide: MAIL_SERVICE_TOKEN,
+      inject: [ConfigService],
+      useFactory: async (config: ConfigService) => {
+        return new StibeeService(config);
+      },
+    },
+    {
+      provide: UnsubscribeStibeeServiceToken,
+      useClass: StibeeService,
+    },
+  ],
+  exports: [MAIL_SERVICE_TOKEN, UnsubscribeStibeeServiceToken],
+})
+export class MailModule {}
diff --git a/apps/api/src/mail/mail.service.ts b/apps/api/src/mail/mail.service.ts
new file mode 100644
index 00000000..6fec9ca0
--- /dev/null
+++ b/apps/api/src/mail/mail.service.ts
@@ -0,0 +1,5 @@
+export const MAIL_SERVICE_TOKEN = Symbol('MailService');
+
+export interface MailService {
+  send(name: string, email: string, code: string, githubId: string);
+}
diff --git a/apps/api/src/intra-auth/stibee.service.ts b/apps/api/src/mail/stibee.service.ts
similarity index 73%
rename from apps/api/src/intra-auth/stibee.service.ts
rename to apps/api/src/mail/stibee.service.ts
index bc8c2b84..76c915f4 100644
--- a/apps/api/src/intra-auth/stibee.service.ts
+++ b/apps/api/src/mail/stibee.service.ts
@@ -1,24 +1,29 @@
+import { logger } from '@app/utils/logger';
 import { Injectable, InternalServerErrorException } from '@nestjs/common';
 import { ConfigService } from '@nestjs/config';
 import axios from 'axios';
-import { EMAIL } from './intra-auth.constant';
-import MailService from './mail.service';
-import UnsubscribeStibeeService from './unsubscribe-stibee.service';
+import { MailService } from './mail.service';
+import { UnsubscribeStibeeService } from './unsubscribe-stibee.service';
+
 @Injectable()
 export default class StibeeService implements MailService, UnsubscribeStibeeService {
   constructor(private readonly configService: ConfigService) {}
 
   private accessToken = this.configService.get<string>('STIBEE_API_KEY');
 
-  async send(name: string, code: string, githubId: string) {
+  async send(email: string, name: string, code: string, githubId: string) {
     await this.subscribe(name);
-    const url = this.configService.get('STIBEE_MAIL_SEND_URL');
+    const url = this.configService.get<string>('STIBEE_MAIL_SEND_URL');
+
+    await this.mailSend(url, email, name, code, githubId);
+  }
 
+  private async mailSend(url: string, email: string, name: string, code: string, githubId: string) {
     try {
       await axios.post(
         url,
         {
-          subscriber: `${name}@${EMAIL}`,
+          subscriber: email,
           name,
           code,
           githubId,
@@ -67,7 +72,7 @@ export default class StibeeService implements MailService, UnsubscribeStibeeServ
   }
 
   private printError(err: any) {
-    console.error({ status: err.response.status, message: err.response.data });
-    console.trace();
+    logger.error({ status: err.response.status, message: err.response.data });
+    logger.error(err.stack);
   }
 }
diff --git a/apps/api/src/mail/unsubscribe-stibee.service.ts b/apps/api/src/mail/unsubscribe-stibee.service.ts
new file mode 100644
index 00000000..0e055795
--- /dev/null
+++ b/apps/api/src/mail/unsubscribe-stibee.service.ts
@@ -0,0 +1,5 @@
+export const UnsubscribeStibeeServiceToken = Symbol('UnsubscribeStibee');
+
+export interface UnsubscribeStibeeService {
+  unsubscribe(name: string);
+}
diff --git a/apps/api/test/e2e/intra-auth.e2e-spec.ts b/apps/api/test/e2e/intra-auth.e2e-spec.ts
index daef8535..95ad74cb 100644
--- a/apps/api/test/e2e/intra-auth.e2e-spec.ts
+++ b/apps/api/test/e2e/intra-auth.e2e-spec.ts
@@ -2,7 +2,9 @@ import { AuthModule } from '@api/auth/auth.module';
 import { AuthService } from '@api/auth/auth.service';
 import { IntraAuthController } from '@api/intra-auth/intra-auth.controller';
 import { IntraAuthService } from '@api/intra-auth/intra-auth.service';
-import StibeeService from '@api/intra-auth/stibee.service';
+import { MAIL_SERVICE_TOKEN } from '@api/mail/mail.service';
+import StibeeService from '@api/mail/stibee.service';
+import { UnsubscribeStibeeServiceToken } from '@api/mail/unsubscribe-stibee.service';
 import { UserRepository } from '@api/user/repositories/user.repository';
 import { UserModule } from '@api/user/user.module';
 import { CacheService } from '@app/common/cache/cache.service';
@@ -42,11 +44,11 @@ describe('IntraAuth', () => {
       providers: [
         IntraAuthService,
         {
-          provide: 'MailService',
+          provide: MAIL_SERVICE_TOKEN,
           useValue: instance(stibeeService),
         },
         {
-          provide: 'UnsubscribeStibeeService',
+          provide: UnsubscribeStibeeServiceToken,
           useValue: instance(stibeeService),
         },
         {