diff --git a/CHANGELOG.md b/CHANGELOG.md
index db6bf9d..f87545c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,7 @@
 - Add Sandbox Messages API
 - Add Sending Domains API
 - Add Sandbox Attachments API
+- Add Accounts API
 
 ## [2.6.0] - 2026-01-27
 - Add Inboxes API
diff --git a/README.md b/README.md
index 88587db..84cea42 100644
--- a/README.md
+++ b/README.md
@@ -189,10 +189,11 @@ Contact management:
 
 - Contacts CRUD & Listing – [`contacts_api.rb`](examples/contacts_api.rb)
 
-General API:
+General:
 
 - Templates CRUD – [`email_templates_api.rb`](examples/email_templates_api.rb)
 - Action Mailer – [`action_mailer.rb`](examples/action_mailer.rb)
+- Accounts API – [`accounts_api.rb`](examples/accounts_api.rb)
 
 ## Migration guide v1 → v2
 
diff --git a/examples/accounts_api.rb b/examples/accounts_api.rb
new file mode 100644
index 0000000..a0abbb2
--- /dev/null
+++ b/examples/accounts_api.rb
@@ -0,0 +1,15 @@
+require 'mailtrap'
+
+client = Mailtrap::Client.new(api_key: 'your-api-key')
+account_id = 3229
+accounts = Mailtrap::AccountsAPI.new(account_id, client)
+
+# Set your API credentials as environment variables
+# export MAILTRAP_API_KEY='your-api-key'
+# export MAILTRAP_ACCOUNT_ID=your-account-id
+
+# accounts = Mailtrap::AccountsAPI.new
+
+# Get all accounts
+accounts.list
+# => [#<struct Mailtrap::Account id=123456, name="My Account", access_levels=[1000]>]
diff --git a/lib/mailtrap.rb b/lib/mailtrap.rb
index 0823441..9235686 100644
--- a/lib/mailtrap.rb
+++ b/lib/mailtrap.rb
@@ -4,17 +4,18 @@
 require_relative 'mailtrap/mail'
 require_relative 'mailtrap/errors'
 require_relative 'mailtrap/version'
-require_relative 'mailtrap/email_templates_api'
+require_relative 'mailtrap/accounts_api'
 require_relative 'mailtrap/contacts_api'
 require_relative 'mailtrap/contact_lists_api'
 require_relative 'mailtrap/contact_fields_api'
 require_relative 'mailtrap/contact_imports_api'
-require_relative 'mailtrap/suppressions_api'
-require_relative 'mailtrap/sending_domains_api'
-require_relative 'mailtrap/projects_api'
+require_relative 'mailtrap/email_templates_api'
 require_relative 'mailtrap/inboxes_api'
+require_relative 'mailtrap/projects_api'
 require_relative 'mailtrap/sandbox_messages_api'
 require_relative 'mailtrap/sandbox_attachments_api'
+require_relative 'mailtrap/suppressions_api'
+require_relative 'mailtrap/sending_domains_api'
 
 module Mailtrap
   # @!macro api_errors
diff --git a/lib/mailtrap/account.rb b/lib/mailtrap/account.rb
new file mode 100644
index 0000000..c16dc1a
--- /dev/null
+++ b/lib/mailtrap/account.rb
@@ -0,0 +1,16 @@
+# frozen_string_literal: true
+
+module Mailtrap
+  # Data Transfer Object for Account
+  # @see https://api-docs.mailtrap.io/docs/mailtrap-api-docs/d26921ca2a48f-get-all-accounts
+  # @attr_reader id [Integer] The account ID
+  # @attr_reader name [String] The account name
+  # @attr_reader access_levels [Array] The account access levels
+  #
+  Account = Struct.new(
+    :id,
+    :name,
+    :access_levels,
+    keyword_init: true
+  )
+end
diff --git a/lib/mailtrap/accounts_api.rb b/lib/mailtrap/accounts_api.rb
new file mode 100644
index 0000000..056e4b6
--- /dev/null
+++ b/lib/mailtrap/accounts_api.rb
@@ -0,0 +1,25 @@
+# frozen_string_literal: true
+
+require_relative 'base_api'
+require_relative 'account'
+
+module Mailtrap
+  class AccountsAPI
+    include BaseAPI
+
+    self.response_class = Account
+
+    # Lists all accounts
+    # @return [Array<Account>] Array of accounts
+    # @!macro api_errors
+    def list
+      base_list
+    end
+
+    private
+
+    def base_path
+      '/api/accounts'
+    end
+  end
+end
diff --git a/spec/fixtures/vcr_cassettes/Mailtrap_AccountsAPI/_list/maps_response_data_to_Account_objects.yml b/spec/fixtures/vcr_cassettes/Mailtrap_AccountsAPI/_list/maps_response_data_to_Account_objects.yml
new file mode 100644
index 0000000..05d19a6
--- /dev/null
+++ b/spec/fixtures/vcr_cassettes/Mailtrap_AccountsAPI/_list/maps_response_data_to_Account_objects.yml
@@ -0,0 +1,79 @@
+---
+http_interactions:
+- request:
+    method: get
+    uri: https://mailtrap.io/api/accounts
+    body:
+      encoding: US-ASCII
+      string: ''
+    headers:
+      Accept-Encoding:
+      - gzip;q=1.0,deflate;q=0.6,identity;q=0.3
+      Accept:
+      - "*/*"
+      User-Agent:
+      - mailtrap-ruby (https://github.com/mailtrap/mailtrap-ruby)
+      Host:
+      - mailtrap.io
+      Authorization:
+      - Bearer <BEARER_TOKEN>
+      Content-Type:
+      - application/json
+  response:
+    status:
+      code: 200
+      message: OK
+    headers:
+      Date:
+      - Mon, 05 Jan 2026 12:24:36 GMT
+      Content-Type:
+      - application/json; charset=utf-8
+      Transfer-Encoding:
+      - chunked
+      Connection:
+      - keep-alive
+      Server:
+      - cloudflare
+      X-Frame-Options:
+      - SAMEORIGIN
+      X-Xss-Protection:
+      - 1; mode=block
+      X-Content-Type-Options:
+      - nosniff
+      X-Download-Options:
+      - noopen
+      X-Permitted-Cross-Domain-Policies:
+      - none
+      Referrer-Policy:
+      - strict-origin-when-cross-origin
+      Vary:
+      - Accept
+      X-Mailtrap-Version:
+      - v2
+      X-Ratelimit-Limit:
+      - '150'
+      X-Ratelimit-Remaining:
+      - '149'
+      Etag:
+      - W/"42e73e96e1ed3c973620c8c09d2f244c"
+      Cache-Control:
+      - max-age=0, private, must-revalidate
+      X-Request-Id:
+      - 10a9a535-2aa9-4004-baa2-6efbf6c7e701
+      X-Runtime:
+      - '0.042150'
+      X-Cloud-Trace-Context:
+      - 26c79d159ce04474883f150f101a74b1;o=0
+      Strict-Transport-Security:
+      - max-age=0
+      Cf-Cache-Status:
+      - DYNAMIC
+      Cf-Ray:
+      - 9b92f41c6ab0d2eb-FRA
+      Alt-Svc:
+      - h3=":443"; ma=86400
+    body:
+      encoding: ASCII-8BIT
+      string: '[{"id":2326475,"name":"John Doe","access_levels":[100]}]'
+  recorded_at: Mon, 05 Jan 2026 12:24:36 GMT
+recorded_with: VCR 6.2.0
diff --git a/spec/fixtures/vcr_cassettes/Mailtrap_AccountsAPI/_list/when_api_key_is_incorrect/raises_authorization_error.yml b/spec/fixtures/vcr_cassettes/Mailtrap_AccountsAPI/_list/when_api_key_is_incorrect/raises_authorization_error.yml
new file mode 100644
index 0000000..c231550
--- /dev/null
+++ b/spec/fixtures/vcr_cassettes/Mailtrap_AccountsAPI/_list/when_api_key_is_incorrect/raises_authorization_error.yml
@@ -0,0 +1,79 @@
+---
+http_interactions:
+- request:
+    method: get
+    uri: https://mailtrap.io/api/accounts
+    body:
+      encoding: US-ASCII
+      string: ''
+    headers:
+      Accept-Encoding:
+      - gzip;q=1.0,deflate;q=0.6,identity;q=0.3
+      Accept:
+      - "*/*"
+      User-Agent:
+      - mailtrap-ruby (https://github.com/mailtrap/mailtrap-ruby)
+      Host:
+      - mailtrap.io
+      Authorization:
+      - Bearer <BEARER_TOKEN>
+      Content-Type:
+      - application/json
+  response:
+    status:
+      code: 401
+      message: Unauthorized
+    headers:
+      Date:
+      - Mon, 05 Jan 2026 12:24:37 GMT
+      Content-Type:
+      - application/json; charset=utf-8
+      Content-Length:
+      - '31'
+      Connection:
+      - keep-alive
+      Server:
+      - cloudflare
+      X-Frame-Options:
+      - SAMEORIGIN
+      X-Xss-Protection:
+      - 1; mode=block
+      X-Content-Type-Options:
+      - nosniff
+      X-Download-Options:
+      - noopen
+      X-Permitted-Cross-Domain-Policies:
+      - none
+      Referrer-Policy:
+      - strict-origin-when-cross-origin
+      Www-Authenticate:
+      - Token realm="Application"
+      Vary:
+      - Accept
+      X-Mailtrap-Version:
+      - v2
+      X-Ratelimit-Limit:
+      - '150'
+      X-Ratelimit-Remaining:
+      - '149'
+      Cache-Control:
+      - no-cache
+      X-Request-Id:
+      - bb687a17-5205-409a-84fc-9a7efca5378e
+      X-Runtime:
+      - '0.007537'
+      X-Cloud-Trace-Context:
+      - 3810f5b5e5114fb3cd66b23e840b3a23;o=0
+      Strict-Transport-Security:
+      - max-age=0
+      Cf-Cache-Status:
+      - DYNAMIC
+      Cf-Ray:
+      - 9b92f41f8c68f65d-FRA
+      Alt-Svc:
+      - h3=":443"; ma=86400
+    body:
+      encoding: UTF-8
+      string: '{"error":"Incorrect API token"}'
+  recorded_at: Mon, 05 Jan 2026 12:24:37 GMT
+recorded_with: VCR 6.2.0
diff --git a/spec/mailtrap/account_spec.rb b/spec/mailtrap/account_spec.rb
new file mode 100644
index 0000000..6e40608
--- /dev/null
+++ b/spec/mailtrap/account_spec.rb
@@ -0,0 +1,25 @@
+# frozen_string_literal: true
+
+RSpec.describe Mailtrap::Account do
+  describe '#initialize' do
+    subject(:account) { described_class.new(attributes) }
+
+    let(:attributes) do
+      {
+        id: '123456',
+        name: 'Account 1',
+        access_levels: [
+          1000
+        ]
+      }
+    end
+
+    it 'creates an account with all attributes' do
+      expect(account).to match_struct(
+        id: '123456',
+        name: 'Account 1',
+        access_levels: [1000]
+      )
+    end
+  end
+end
diff --git a/spec/mailtrap/accounts_api_spec.rb b/spec/mailtrap/accounts_api_spec.rb
new file mode 100644
index 0000000..f9bf109
--- /dev/null
+++ b/spec/mailtrap/accounts_api_spec.rb
@@ -0,0 +1,29 @@
+# frozen_string_literal: true
+
+RSpec.describe Mailtrap::AccountsAPI, :vcr do
+  subject(:accounts_api) { described_class.new(account_id, client) }
+
+  let(:account_id) { ENV.fetch('MAILTRAP_ACCOUNT_ID', 1_111_111) }
+  let(:client) { Mailtrap::Client.new(api_key: ENV.fetch('MAILTRAP_API_KEY', 'local-api-key')) }
+
+  describe '#list' do
+    subject(:list) { accounts_api.list }
+
+    it 'maps response data to Account objects' do
+      expect(list).to all(be_a(Mailtrap::Account))
+      expect(list.size).to eq(1)
+    end
+
+    context 'when api key is incorrect' do
+      let(:client) { Mailtrap::Client.new(api_key: 'incorrect-api-key') }
+
+      it 'raises authorization error' do
+        expect { list }.to raise_error do |error|
+          expect(error).to be_a(Mailtrap::AuthorizationError)
+          expect(error.message).to include('Incorrect API token')
+          expect(error.messages.any? { |msg| msg.include?('Incorrect API token') }).to be true
+        end
+      end
+    end
+  end
+end