diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 7ccfe12..bc845f3 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "1.15.0"
+  ".": "1.16.0"
 }
\ No newline at end of file
diff --git a/.stats.yml b/.stats.yml
index 8fb9d77..c12f542 100644
--- a/.stats.yml
+++ b/.stats.yml
@@ -1,4 +1,4 @@
 configured_endpoints: 20
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/cas-parser/cas-parser-5c6cdb8b7a2c0ba449927687bc378823ac947b26b7c2e6c379ae14668b73979a.yml
-openapi_spec_hash: 6bc024b866f01da53e2cfd6e404157c7
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/cas-parser/cas-parser-4d179917b01ea51a3325e7b37ecbbb60d0ba8f60381fe715ff3ec31284ca8042.yml
+openapi_spec_hash: d027d37bd7051aa8c05fe1820c05b316
 config_hash: 5509bb7a961ae2e79114b24c381606d4
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 55e85e1..b668254 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## 1.16.0 (2026-08-15)
+
+Full Changelog: [v1.15.0...v1.16.0](https://github.com/CASParser/cas-parser-python/compare/v1.15.0...v1.16.0)
+
+### Features
+
+* **api:** api update ([ceb7878](https://github.com/CASParser/cas-parser-python/commit/ceb78789bb81df619c6e2f8a62f5096f335c4fb0))
+
 ## 1.15.0 (2026-08-08)
 
 Full Changelog: [v1.14.0...v1.15.0](https://github.com/CASParser/cas-parser-python/compare/v1.14.0...v1.15.0)
diff --git a/pyproject.toml b/pyproject.toml
index db0bf0a..0ae106e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "cas-parser-python"
-version = "1.15.0"
+version = "1.16.0"
 description = "The official Python library for the cas-parser API"
 dynamic = ["readme"]
 license = "Apache-2.0"
diff --git a/src/cas_parser/_client.py b/src/cas_parser/_client.py
index 03568c5..7cb49cc 100644
--- a/src/cas_parser/_client.py
+++ b/src/cas_parser/_client.py
@@ -206,7 +206,14 @@ def contract_note(self) -> ContractNoteResource:
     def inbox(self) -> InboxResource:
         """Endpoints for importing CAS files directly from user email inboxes.
 
-        **Supported Providers:** Gmail (more coming soon)
+        **Supported Providers:**
+
+        - **Gmail** (`gmail`, default) — `@gmail.com` and Google Workspace domains
+        - **Microsoft** (`outlook`) — personal Microsoft accounts: `@outlook.com`,
+          `@hotmail.com`, `@live.com`, `@msn.com`, and localised variants such as
+          `@hotmail.co.uk`, `@live.in`, `@hotmail.fr`. Any other address registered
+          as a personal Microsoft account also works, including custom domains.
+        - **Zoho Mail** (`zoho`) — Zoho-hosted mailboxes, including custom domains
 
         **How it works:**
         1. Call `POST /v4/inbox/connect` to get an OAuth URL
@@ -519,7 +526,14 @@ def contract_note(self) -> AsyncContractNoteResource:
     def inbox(self) -> AsyncInboxResource:
         """Endpoints for importing CAS files directly from user email inboxes.
 
-        **Supported Providers:** Gmail (more coming soon)
+        **Supported Providers:**
+
+        - **Gmail** (`gmail`, default) — `@gmail.com` and Google Workspace domains
+        - **Microsoft** (`outlook`) — personal Microsoft accounts: `@outlook.com`,
+          `@hotmail.com`, `@live.com`, `@msn.com`, and localised variants such as
+          `@hotmail.co.uk`, `@live.in`, `@hotmail.fr`. Any other address registered
+          as a personal Microsoft account also works, including custom domains.
+        - **Zoho Mail** (`zoho`) — Zoho-hosted mailboxes, including custom domains
 
         **How it works:**
         1. Call `POST /v4/inbox/connect` to get an OAuth URL
@@ -774,7 +788,14 @@ def contract_note(self) -> contract_note.ContractNoteResourceWithRawResponse:
     def inbox(self) -> inbox.InboxResourceWithRawResponse:
         """Endpoints for importing CAS files directly from user email inboxes.
 
-        **Supported Providers:** Gmail (more coming soon)
+        **Supported Providers:**
+
+        - **Gmail** (`gmail`, default) — `@gmail.com` and Google Workspace domains
+        - **Microsoft** (`outlook`) — personal Microsoft accounts: `@outlook.com`,
+          `@hotmail.com`, `@live.com`, `@msn.com`, and localised variants such as
+          `@hotmail.co.uk`, `@live.in`, `@hotmail.fr`. Any other address registered
+          as a personal Microsoft account also works, including custom domains.
+        - **Zoho Mail** (`zoho`) — Zoho-hosted mailboxes, including custom domains
 
         **How it works:**
         1. Call `POST /v4/inbox/connect` to get an OAuth URL
@@ -910,7 +931,14 @@ def contract_note(self) -> contract_note.AsyncContractNoteResourceWithRawRespons
     def inbox(self) -> inbox.AsyncInboxResourceWithRawResponse:
         """Endpoints for importing CAS files directly from user email inboxes.
 
-        **Supported Providers:** Gmail (more coming soon)
+        **Supported Providers:**
+
+        - **Gmail** (`gmail`, default) — `@gmail.com` and Google Workspace domains
+        - **Microsoft** (`outlook`) — personal Microsoft accounts: `@outlook.com`,
+          `@hotmail.com`, `@live.com`, `@msn.com`, and localised variants such as
+          `@hotmail.co.uk`, `@live.in`, `@hotmail.fr`. Any other address registered
+          as a personal Microsoft account also works, including custom domains.
+        - **Zoho Mail** (`zoho`) — Zoho-hosted mailboxes, including custom domains
 
         **How it works:**
         1. Call `POST /v4/inbox/connect` to get an OAuth URL
@@ -1046,7 +1074,14 @@ def contract_note(self) -> contract_note.ContractNoteResourceWithStreamingRespon
     def inbox(self) -> inbox.InboxResourceWithStreamingResponse:
         """Endpoints for importing CAS files directly from user email inboxes.
 
-        **Supported Providers:** Gmail (more coming soon)
+        **Supported Providers:**
+
+        - **Gmail** (`gmail`, default) — `@gmail.com` and Google Workspace domains
+        - **Microsoft** (`outlook`) — personal Microsoft accounts: `@outlook.com`,
+          `@hotmail.com`, `@live.com`, `@msn.com`, and localised variants such as
+          `@hotmail.co.uk`, `@live.in`, `@hotmail.fr`. Any other address registered
+          as a personal Microsoft account also works, including custom domains.
+        - **Zoho Mail** (`zoho`) — Zoho-hosted mailboxes, including custom domains
 
         **How it works:**
         1. Call `POST /v4/inbox/connect` to get an OAuth URL
@@ -1182,7 +1217,14 @@ def contract_note(self) -> contract_note.AsyncContractNoteResourceWithStreamingR
     def inbox(self) -> inbox.AsyncInboxResourceWithStreamingResponse:
         """Endpoints for importing CAS files directly from user email inboxes.
 
-        **Supported Providers:** Gmail (more coming soon)
+        **Supported Providers:**
+
+        - **Gmail** (`gmail`, default) — `@gmail.com` and Google Workspace domains
+        - **Microsoft** (`outlook`) — personal Microsoft accounts: `@outlook.com`,
+          `@hotmail.com`, `@live.com`, `@msn.com`, and localised variants such as
+          `@hotmail.co.uk`, `@live.in`, `@hotmail.fr`. Any other address registered
+          as a personal Microsoft account also works, including custom domains.
+        - **Zoho Mail** (`zoho`) — Zoho-hosted mailboxes, including custom domains
 
         **How it works:**
         1. Call `POST /v4/inbox/connect` to get an OAuth URL
diff --git a/src/cas_parser/_version.py b/src/cas_parser/_version.py
index 1d0c341..e7b34cf 100644
--- a/src/cas_parser/_version.py
+++ b/src/cas_parser/_version.py
@@ -1,4 +1,4 @@
 # File generated from our OpenAPI spec by Stainless. See CONTRIBUTING.md for details.
 
 __title__ = "cas_parser"
-__version__ = "1.15.0"  # x-release-please-version
+__version__ = "1.16.0"  # x-release-please-version
diff --git a/src/cas_parser/resources/inbox.py b/src/cas_parser/resources/inbox.py
index 2322067..d58c55a 100644
--- a/src/cas_parser/resources/inbox.py
+++ b/src/cas_parser/resources/inbox.py
@@ -31,7 +31,14 @@
 class InboxResource(SyncAPIResource):
     """Endpoints for importing CAS files directly from user email inboxes.
 
-    **Supported Providers:** Gmail (more coming soon)
+    **Supported Providers:**
+
+    - **Gmail** (`gmail`, default) — `@gmail.com` and Google Workspace domains
+    - **Microsoft** (`outlook`) — personal Microsoft accounts: `@outlook.com`,
+      `@hotmail.com`, `@live.com`, `@msn.com`, and localised variants such as
+      `@hotmail.co.uk`, `@live.in`, `@hotmail.fr`. Any other address registered
+      as a personal Microsoft account also works, including custom domains.
+    - **Zoho Mail** (`zoho`) — Zoho-hosted mailboxes, including custom domains
 
     **How it works:**
     1. Call `POST /v4/inbox/connect` to get an OAuth URL
@@ -104,7 +111,7 @@ def connect_email(
         self,
         *,
         redirect_uri: str,
-        provider: Literal["gmail", "outlook"] | Omit = omit,
+        provider: Literal["gmail", "outlook", "zoho"] | Omit = omit,
         state: str | Omit = omit,
         # Use the following arguments if you need to pass additional parameters to the API that aren't available via kwargs.
         # The extra values given here take precedence over values defined on the client or passed to this method.
@@ -132,18 +139,25 @@ def connect_email(
         - `state` - Your original state parameter
 
         **Store the `inbox_token` client-side** and use it for all subsequent inbox API
-        calls.
+        calls. The token is long-lived (it stores an encrypted refresh token), so a
+        single OAuth connect gives ongoing access to both historical and future CAS
+        statements in the user's inbox. Reuse the same token until the user revokes
+        access via `/v4/inbox/disconnect` or their provider's account settings.
 
         Args:
           redirect_uri: Your callback URL to receive the inbox_token (must be http or https)
 
           provider: Mail provider to connect. Defaults to `gmail`.
 
-              - `gmail` - Google accounts
-              - `outlook` - Microsoft accounts
+              - `gmail` - Google accounts: `@gmail.com` and Google Workspace domains.
+              - `outlook` - personal Microsoft accounts: `@outlook.com`, `@hotmail.com`,
+                `@live.com`, `@msn.com` and localised variants (`@hotmail.co.uk`, `@live.in`,
+                `@hotmail.fr`). Any other address registered as a personal Microsoft account
+                also works, including custom domains.
+              - `zoho` - Zoho Mail accounts, including custom domains hosted on Zoho.
 
-              Any value other than `outlook` is treated as `gmail`. The resolved provider is
-              returned in the response.
+              Any unrecognised value is treated as `gmail`. The resolved provider is returned
+              in the response.
 
           state: State parameter for CSRF protection (returned in redirect)
 
@@ -275,7 +289,14 @@ def list_cas_files(
 class AsyncInboxResource(AsyncAPIResource):
     """Endpoints for importing CAS files directly from user email inboxes.
 
-    **Supported Providers:** Gmail (more coming soon)
+    **Supported Providers:**
+
+    - **Gmail** (`gmail`, default) — `@gmail.com` and Google Workspace domains
+    - **Microsoft** (`outlook`) — personal Microsoft accounts: `@outlook.com`,
+      `@hotmail.com`, `@live.com`, `@msn.com`, and localised variants such as
+      `@hotmail.co.uk`, `@live.in`, `@hotmail.fr`. Any other address registered
+      as a personal Microsoft account also works, including custom domains.
+    - **Zoho Mail** (`zoho`) — Zoho-hosted mailboxes, including custom domains
 
     **How it works:**
     1. Call `POST /v4/inbox/connect` to get an OAuth URL
@@ -348,7 +369,7 @@ async def connect_email(
         self,
         *,
         redirect_uri: str,
-        provider: Literal["gmail", "outlook"] | Omit = omit,
+        provider: Literal["gmail", "outlook", "zoho"] | Omit = omit,
         state: str | Omit = omit,
         # Use the following arguments if you need to pass additional parameters to the API that aren't available via kwargs.
         # The extra values given here take precedence over values defined on the client or passed to this method.
@@ -376,18 +397,25 @@ async def connect_email(
         - `state` - Your original state parameter
 
         **Store the `inbox_token` client-side** and use it for all subsequent inbox API
-        calls.
+        calls. The token is long-lived (it stores an encrypted refresh token), so a
+        single OAuth connect gives ongoing access to both historical and future CAS
+        statements in the user's inbox. Reuse the same token until the user revokes
+        access via `/v4/inbox/disconnect` or their provider's account settings.
 
         Args:
           redirect_uri: Your callback URL to receive the inbox_token (must be http or https)
 
           provider: Mail provider to connect. Defaults to `gmail`.
 
-              - `gmail` - Google accounts
-              - `outlook` - Microsoft accounts
+              - `gmail` - Google accounts: `@gmail.com` and Google Workspace domains.
+              - `outlook` - personal Microsoft accounts: `@outlook.com`, `@hotmail.com`,
+                `@live.com`, `@msn.com` and localised variants (`@hotmail.co.uk`, `@live.in`,
+                `@hotmail.fr`). Any other address registered as a personal Microsoft account
+                also works, including custom domains.
+              - `zoho` - Zoho Mail accounts, including custom domains hosted on Zoho.
 
-              Any value other than `outlook` is treated as `gmail`. The resolved provider is
-              returned in the response.
+              Any unrecognised value is treated as `gmail`. The resolved provider is returned
+              in the response.
 
           state: State parameter for CSRF protection (returned in redirect)
 
diff --git a/src/cas_parser/types/inbox_connect_email_params.py b/src/cas_parser/types/inbox_connect_email_params.py
index cf0abee..980aeb3 100644
--- a/src/cas_parser/types/inbox_connect_email_params.py
+++ b/src/cas_parser/types/inbox_connect_email_params.py
@@ -11,14 +11,18 @@ class InboxConnectEmailParams(TypedDict, total=False):
     redirect_uri: Required[str]
     """Your callback URL to receive the inbox_token (must be http or https)"""
 
-    provider: Literal["gmail", "outlook"]
+    provider: Literal["gmail", "outlook", "zoho"]
     """Mail provider to connect. Defaults to `gmail`.
 
-    - `gmail` - Google accounts
-    - `outlook` - Microsoft accounts
+    - `gmail` - Google accounts: `@gmail.com` and Google Workspace domains.
+    - `outlook` - personal Microsoft accounts: `@outlook.com`, `@hotmail.com`,
+      `@live.com`, `@msn.com` and localised variants (`@hotmail.co.uk`, `@live.in`,
+      `@hotmail.fr`). Any other address registered as a personal Microsoft account
+      also works, including custom domains.
+    - `zoho` - Zoho Mail accounts, including custom domains hosted on Zoho.
 
-    Any value other than `outlook` is treated as `gmail`. The resolved provider is
-    returned in the response.
+    Any unrecognised value is treated as `gmail`. The resolved provider is returned
+    in the response.
     """
 
     state: str
diff --git a/src/cas_parser/types/inbox_connect_email_response.py b/src/cas_parser/types/inbox_connect_email_response.py
index f80e2ad..4d9948c 100644
--- a/src/cas_parser/types/inbox_connect_email_response.py
+++ b/src/cas_parser/types/inbox_connect_email_response.py
@@ -15,7 +15,7 @@ class InboxConnectEmailResponse(BaseModel):
     oauth_url: Optional[str] = None
     """Redirect user to this URL to start OAuth flow"""
 
-    provider: Optional[Literal["gmail", "outlook"]] = None
+    provider: Optional[Literal["gmail", "outlook", "zoho"]] = None
     """The provider this OAuth URL was generated for"""
 
     status: Optional[str] = None
diff --git a/src/cas_parser/types/inbox_list_cas_files_response.py b/src/cas_parser/types/inbox_list_cas_files_response.py
index c4d1c62..c59c8ad 100644
--- a/src/cas_parser/types/inbox_list_cas_files_response.py
+++ b/src/cas_parser/types/inbox_list_cas_files_response.py
@@ -18,7 +18,7 @@ class File(BaseModel):
     expires_in: Optional[int] = None
     """URL expiration time in seconds. Defaults vary by source:
 
-    - Gmail Inbox Import: 86400 (24h)
+    - Email Inbox Import (Gmail, Outlook, Zoho): 86400 (24h)
     - Inbound Email with `callback_url` set: 172800 (48h)
     - Inbound Email without `callback_url`: aligned with the session TTL (~30 min)
     """