diff --git a/backend/prisma/schema.prisma b/backend/prisma/schema.prisma
index 7ee84f9..ca996d4 100644
--- a/backend/prisma/schema.prisma
+++ b/backend/prisma/schema.prisma
@@ -9,20 +9,22 @@ datasource db {
 }
 
 model User {
-  id              String   @id @default(uuid())
-  email           String   @unique
+  id              String    @id @default(uuid())
+  email           String    @unique
   password        String
-  name            String   @unique
-  displayName     String   @map("display_name")
+  name            String    @unique
+  displayName     String    @map("display_name")
   avatar          String?
   bio             String?
   token           Token[]
-  isVerified      Boolean  @default(false) @map("is_verified")
-  isEmailVerified Boolean  @default(false) @map("is_email_verified")
-  isTotpEnabled   Boolean  @default(false) @map("is_totp_enabled")
-  totpSecret      String?  @map("totp_secret")
-  createdAt       DateTime @default(now()) @map("created_at")
-  updatedAt       DateTime @updatedAt @map("updated_at")
+  isVerified      Boolean   @default(false) @map("is_verified")
+  isEmailVerified Boolean   @default(false) @map("is_email_verified")
+  isTotpEnabled   Boolean   @default(false) @map("is_totp_enabled")
+  isDeactivated   Boolean   @default(false) @map("is_deactivated")
+  deactivatedAt   DateTime? @map("deactivated_at")
+  totpSecret      String?   @map("totp_secret")
+  createdAt       DateTime  @default(now()) @map("created_at")
+  updatedAt       DateTime  @updatedAt @map("updated_at")
 
   @@map("users")
 }
@@ -43,6 +45,7 @@ model Token {
 enum TokenType {
   EMAIL_VERIFY
   PASSWORD_RESET
+  DEACTIVATE_ACCOUNT
 
   @@map("token_types")
 }
diff --git a/backend/src/core/core.module.ts b/backend/src/core/core.module.ts
index 500e7e1..c7a7996 100644
--- a/backend/src/core/core.module.ts
+++ b/backend/src/core/core.module.ts
@@ -1,5 +1,6 @@
 import { getGraphQLConfig } from '@/src/core/config/graphql.config'
 import { AccountModule } from '@/src/module/auth/account/account.module'
+import { DeactivateModule } from '@/src/module/auth/deactivate/deactivate.module';
 import { PasswordRecoveryModule } from '@/src/module/auth/password-recovery/password-recovery.module'
 import { SessionModule } from '@/src/module/auth/session/session.module'
 import { TotpModule } from '@/src/module/auth/totp/totp.module'
@@ -33,6 +34,7 @@ import { RedisModule } from './redis/redis.module'
     VerificationModule,
     PasswordRecoveryModule,
     TotpModule,
+    DeactivateModule,
   ],
 })
 export class CoreModule {}
diff --git a/backend/src/core/graphql/schema.gql b/backend/src/core/graphql/schema.gql
index f2dc7d1..3be3ea8 100644
--- a/backend/src/core/graphql/schema.gql
+++ b/backend/src/core/graphql/schema.gql
@@ -18,6 +18,12 @@ A date-time string at UTC, such as 2019-12-03T09:54:33Z, compliant with the date
 """
 scalar DateTime
 
+input DeactivateAccountInput {
+  email: String!
+  password: String!
+  pin: String
+}
+
 type DeviceModel {
   browser: String!
   os: String!
@@ -45,6 +51,7 @@ input LoginInput {
 type Mutation {
   clearSessionCookie: Boolean!
   createUser(data: CreateUserInput!): UserModel!
+  deactivateAccount(data: DeactivateAccountInput!): AuthModel!
   disableTotp: Boolean!
   enableTotp(data: EnableTotpInput!): Boolean!
   loginUser(data: LoginInput!): AuthModel!
@@ -94,9 +101,11 @@ type UserModel {
   avatar: String
   bio: String
   createdAt: DateTime!
+  deactivatedAt: DateTime
   displayName: String!
   email: String!
   id: ID!
+  isDeactivated: Boolean!
   isEmailVerified: Boolean!
   isTotpEnabled: Boolean!
   isVerified: Boolean!
diff --git a/backend/src/module/auth/account/models/user.model.ts b/backend/src/module/auth/account/models/user.model.ts
index c0c00ee..9294f71 100644
--- a/backend/src/module/auth/account/models/user.model.ts
+++ b/backend/src/module/auth/account/models/user.model.ts
@@ -33,6 +33,12 @@ export class UserModel implements User {
   @Field(() => Boolean)
   isTotpEnabled: boolean
 
+  @Field(() => Boolean)
+  isDeactivated: boolean
+
+  @Field(() => Date, { nullable: true })
+  deactivatedAt: Date
+
   @Field(() => String, { nullable: true })
   totpSecret: string
 
diff --git a/backend/src/module/auth/deactivate/deactivate.module.ts b/backend/src/module/auth/deactivate/deactivate.module.ts
new file mode 100644
index 0000000..f644ce2
--- /dev/null
+++ b/backend/src/module/auth/deactivate/deactivate.module.ts
@@ -0,0 +1,8 @@
+import { Module } from '@nestjs/common';
+import { DeactivateService } from './deactivate.service';
+import { DeactivateResolver } from './deactivate.resolver';
+
+@Module({
+  providers: [DeactivateResolver, DeactivateService],
+})
+export class DeactivateModule {}
diff --git a/backend/src/module/auth/deactivate/deactivate.resolver.ts b/backend/src/module/auth/deactivate/deactivate.resolver.ts
new file mode 100644
index 0000000..abae648
--- /dev/null
+++ b/backend/src/module/auth/deactivate/deactivate.resolver.ts
@@ -0,0 +1,25 @@
+import { AuthModel } from '@/src/module/auth/account/models/auth.model'
+import { DeactivateAccountInput } from '@/src/module/auth/deactivate/inputs/deactivate-account.input'
+import { Authorization } from '@/src/shared/decorators/auth.decorator'
+import { Authorized } from '@/src/shared/decorators/authorized.decorator'
+import { UserAgent } from '@/src/shared/decorators/user-agent.decorator'
+import { GqlContext } from '@/src/shared/types/gql-context.types'
+import { Args, Context, Mutation, Resolver } from '@nestjs/graphql'
+import { User } from '@prisma/generated'
+import { DeactivateService } from './deactivate.service'
+
+@Resolver('Deactivate')
+export class DeactivateResolver {
+  constructor(private readonly deactivateService: DeactivateService) {}
+
+  @Authorization()
+  @Mutation(() => AuthModel, { name: 'deactivateAccount' })
+  public async deactivate(
+    @Context() { req }: GqlContext,
+    @Args('data') input: DeactivateAccountInput,
+    @UserAgent() userAgent: string,
+    @Authorized() user: User,
+  ) {
+    return this.deactivateService.deactivate(req, input, user, userAgent)
+  }
+}
diff --git a/backend/src/module/auth/deactivate/deactivate.service.ts b/backend/src/module/auth/deactivate/deactivate.service.ts
new file mode 100644
index 0000000..380f748
--- /dev/null
+++ b/backend/src/module/auth/deactivate/deactivate.service.ts
@@ -0,0 +1,94 @@
+import { PrismaService } from '@/src/core/prisma/prisma.service'
+import { DeactivateAccountInput } from '@/src/module/auth/deactivate/inputs/deactivate-account.input'
+import { MailService } from '@/src/module/libs/mail/mail.service'
+import { SessionInfo } from '@/src/shared/types/session-metadata.types'
+import { generateToken } from '@/src/shared/util/generate-token.util'
+import { getSessionMetadata } from '@/src/shared/util/session-metadata.util'
+import { destroySession } from '@/src/shared/util/session.util'
+import { BadRequestException, Injectable, NotFoundException } from '@nestjs/common'
+import { ConfigService } from '@nestjs/config'
+import { TokenType, User } from '@prisma/generated'
+import { verify } from 'argon2'
+import { Request } from 'express'
+
+@Injectable()
+export class DeactivateService {
+  constructor(
+    private readonly prismaService: PrismaService,
+    private readonly configService: ConfigService,
+    private readonly mailService: MailService,
+  ) {
+  }
+
+  public async deactivate(req: Request, input: DeactivateAccountInput, user: User, userAgent: string) {
+    const { email, password, pin } = input
+
+    if (email !== user.email) {
+      throw new BadRequestException('Неверная почта')
+    }
+
+    const isValidPassword = await verify(user.password, password)
+
+    if (!isValidPassword) {
+      throw new BadRequestException('Неверный пароль')
+    }
+
+    if (!pin) {
+      await this.sendDeactivationToken(req, user, userAgent)
+      return { message: 'Требуется ввести код подтверждения' }
+    }
+
+    await this.validateDeactivateToken(req, pin)
+
+    return { user }
+  }
+
+  private async validateDeactivateToken(req: Request, token: string) {
+    const existingToken = await this.prismaService.token.findUnique({
+      where: { token, type: TokenType.DEACTIVATE_ACCOUNT },
+    })
+
+    if (!existingToken) {
+      throw new NotFoundException('Токен не найден')
+    }
+
+    const hasExpired = new Date(existingToken.expiresIn) < new Date()
+
+    if (hasExpired) {
+      throw new BadRequestException('Токен истек')
+    }
+
+    await this.prismaService.user.update({
+      where: {
+        id: existingToken.userId!, // todo fixme
+      },
+      data: {
+        isDeactivated: true,
+        deactivatedAt: new Date(),
+      },
+    })
+
+    await this.prismaService.token.delete({
+      where: {
+        id: existingToken.id,
+        type: TokenType.DEACTIVATE_ACCOUNT,
+      },
+    })
+
+    return destroySession(req, this.configService)
+  }
+
+  public async sendDeactivationToken(req: Request, user: User, userAgent: string) {
+    const deactivateToken = await generateToken(
+      this.prismaService,
+      user,
+      TokenType.DEACTIVATE_ACCOUNT,
+      false,
+    )
+
+    const metadata = getSessionMetadata(req, userAgent)
+    await this.mailService.sendDeactivateToken(user.email, deactivateToken.token, metadata)
+
+    return true
+  }
+}
diff --git a/backend/src/module/auth/deactivate/inputs/deactivate-account.input.ts b/backend/src/module/auth/deactivate/inputs/deactivate-account.input.ts
new file mode 100644
index 0000000..0cc32b4
--- /dev/null
+++ b/backend/src/module/auth/deactivate/inputs/deactivate-account.input.ts
@@ -0,0 +1,24 @@
+import { Field, InputType } from '@nestjs/graphql'
+import { IsEmail, IsNotEmpty, IsOptional, IsString, Length, MinLength } from 'class-validator'
+
+@InputType()
+export class DeactivateAccountInput {
+  @Field(() => String)
+  @IsString()
+  @IsNotEmpty()
+  @IsEmail()
+  email: string
+
+  @Field(() => String)
+  @IsString()
+  @IsNotEmpty()
+  @MinLength(8)
+  password: string
+
+  @Field(() => String, { nullable: true })
+  @IsString()
+  @IsNotEmpty()
+  @IsOptional()
+  @Length(6, 6)
+  pin: string
+}
diff --git a/backend/src/module/libs/mail/mail.service.ts b/backend/src/module/libs/mail/mail.service.ts
index 0d2fdf6..b0744e4 100644
--- a/backend/src/module/libs/mail/mail.service.ts
+++ b/backend/src/module/libs/mail/mail.service.ts
@@ -1,3 +1,4 @@
+import { DeactivateTemplate } from '@/src/module/libs/mail/templates/deactivate.template'
 import PasswordRecoveryTemplate from '@/src/module/libs/mail/templates/password-recovery.template'
 import { SessionInfo } from '@/src/shared/types/session-metadata.types'
 import { Token } from '@prisma/generated'
@@ -18,16 +19,20 @@ export class MailService {
     const domain = this.configService.getOrThrow<string>('ALLOWED_ORIGIN')
     const html = await render(VerificationTemplate({ domain, token }))
 
-    // eslint-disable-next-line @typescript-eslint/no-unsafe-return -- todo fixme
-    return this.sendMail(email, 'Верификация аккаунта', html)
+    void this.sendMail(email, 'Верификация аккаунта', html)
   }
 
   public async sendPasswordResetToken(email: string, token: Token['token'], metadata: SessionInfo) {
     const domain = this.configService.getOrThrow<string>('ALLOWED_ORIGIN')
     const html = await render(PasswordRecoveryTemplate({ domain, token, metadata }))
 
-    // eslint-disable-next-line @typescript-eslint/no-unsafe-return -- todo fixme
-    return this.sendMail(email, 'Сброс пароля', html)
+    void this.sendMail(email, 'Сброс пароля', html)
+  }
+
+  public async sendDeactivateToken(email: string, token: Token['token'], metadata: SessionInfo) {
+    const html = await render(DeactivateTemplate({ token, metadata }))
+
+    void this.sendMail(email, 'Деактивация аккаунта', html)
   }
 
   private sendMail(email: string, subject: string, html: string) {
diff --git a/backend/src/module/libs/mail/templates/deactivate.template.tsx b/backend/src/module/libs/mail/templates/deactivate.template.tsx
new file mode 100644
index 0000000..45b0ef6
--- /dev/null
+++ b/backend/src/module/libs/mail/templates/deactivate.template.tsx
@@ -0,0 +1,90 @@
+import type { SessionInfo } from '@/src/shared/types/session-metadata.types'
+import { Body, Head, Heading, Link, Preview, Section, Tailwind, Text } from '@react-email/components'
+import { Html } from '@react-email/html'
+import * as React from 'react'
+
+interface DeactivateTemplateProps {
+  token: string
+  metadata: SessionInfo
+}
+
+export function DeactivateTemplate({ token, metadata }: DeactivateTemplateProps) {
+  return (
+    <Html>
+      <Head />
+      <Preview>Деактивация аккаунта</Preview>
+      <Tailwind>
+        <Body className="max-w-2xl mx-auto p-6 bg-slate-50">
+          <Section className="text-center mb-8">
+            <Heading className="text-3xl text-black font-bold">
+              Запрос на деактивацию аккаунта
+            </Heading>
+            <Text className="text-black text-base mt-2">
+              Вы инициировали процесс деактивации вашего аккаунта на платформе
+              {' '}
+              <b>TeaStream</b>
+              .
+            </Text>
+          </Section>
+
+          <Section className="bg-gray-100 rounded-lg p-6 text-center mb-6">
+            <Heading className="text-2xl text-black font-semibold">
+              Код подтверждения:
+            </Heading>
+            <Heading className="text-3xl text-black font-semibold">
+              {token}
+            </Heading>
+            <Text className="text-black">
+              Этот код действителен в течение 5 минут.
+            </Text>
+          </Section>
+
+          <Section className="bg-gray-100 rounded-lg p-6 mb-6">
+            <Heading
+              className="text-xl font-semibold text-[#18B9AE]"
+            >
+              Информация о запросе:
+            </Heading>
+            <ul className="list-disc list-inside text-black mt-2">
+              <li>
+                🌍 Расположение:
+                {metadata.location.country}
+                ,
+                {metadata.location.city}
+              </li>
+              <li>
+                📱 Операционная система:
+                {metadata.device.os}
+              </li>
+              <li>
+                🌐 Браузер:
+                {metadata.device.browser}
+              </li>
+              <li>
+                💻 IP-адрес:
+                {metadata.ip}
+              </li>
+            </ul>
+            <Text className="text-gray-600 mt-2">
+              Если вы не инициировали этот запрос, пожалуйста, игнорируйте это сообщение.
+            </Text>
+          </Section>
+
+          <Section className="text-center mt-8">
+            <Text className="text-gray-600">
+              Если у вас есть вопросы или вы столкнулись с трудностями, не стесняйтесь обращаться в нашу службу поддержки по адресу
+              {' '}
+              <Link
+                href="mailto:help@teastream.ru"
+                className="text-[#18b9ae] underline"
+              >
+                help@teastream.ru
+              </Link>
+              .
+            </Text>
+          </Section>
+        </Body>
+      </Tailwind>
+    </Html>
+  )
+}