Forward an inbox message

Sends from the inbox address through the standard email send pipeline to caller-supplied To, Cc, and Bcc recipients. to must contain at least one recipient. Optional text and html are prepended to a forwarded-message block containing the original metadata and available body content. The subject is prefixed with Fwd: unless it already has that prefix.

Threading headers are derived from the original message: In-Reply-To is set to its RFC Message-ID, and References contains the original References values plus that Message-ID, de-duplicated and limited to the most recent 20 values.

POST

email_inboxes

{inbox_id}

messages

{message_id}

actions

forward

JavaScript

import Telnyx from 'telnyx';

const client = new Telnyx({
  apiKey: process.env['TELNYX_API_KEY'], // This is the default and can be omitted
});

const response = await client.emailInboxes.messages.actions.forward('inbox_id', 'message_id', {
  to: 'to',
});

console.log(response.data);

import os
from telnyx import Telnyx

client = Telnyx(
    api_key=os.environ.get("TELNYX_API_KEY"),  # This is the default and can be omitted
)
response = client.email_inboxes.messages.actions.forward(
    inbox_id="inbox_id",
    message_id="message_id",
    to="to",
)
print(response.data)

package main

import (
	"context"
	"fmt"

	"github.com/team-telnyx/telnyx-go"
	"github.com/team-telnyx/telnyx-go/option"
)

func main() {
	client := telnyx.NewClient(
		option.WithAPIKey("My API Key"),
	)
	response, err := client.EmailInboxes.Messages.Actions.Forward(
		context.TODO(),
		"inbox_id",
		"message_id",
		telnyx.EmailInboxeMessageActionForwardParams{
			To: "to",
		},
	)
	if err != nil {
		panic(err.Error())
	}
	fmt.Printf("%+v\n", response.Data)
}

package com.telnyx.sdk.example;

import com.telnyx.sdk.client.TelnyxClient;
import com.telnyx.sdk.client.okhttp.TelnyxOkHttpClient;
import com.telnyx.sdk.models.emailInboxes.messages.actions.ActionForwardParams;

public final class Main {
    private Main() {}

    public static void main(String[] args) {
        TelnyxClient client = TelnyxOkHttpClient.fromEnv();

        ActionForwardParams params = ActionForwardParams.builder()
            .to("to")
            .build();
        var response = client.emailInboxes().messages().actions().forward("inbox_id", "message_id", params);
    }
}

<?php

require_once dirname(__DIR__) . '/vendor/autoload.php';

use Telnyx\Client;
use Telnyx\Core\Exceptions\APIException;

$client = new Client(apiKey: getenv('TELNYX_API_KEY') ?: 'My API Key');

try {
  $response = $client->emailInboxes->messages->actions->forward(
    'inbox_id',
    'message_id',
    to: 'to',
  );

  var_dump($response);
} catch (APIException $e) {
  echo $e->getMessage();
}

curl --request POST \
  --url https://api.telnyx.com/v2/email_inboxes/{inbox_id}/messages/{message_id}/actions/forward \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "to": "[email protected]",
  "cc": [
    {
      "email": "[email protected]"
    }
  ],
  "bcc": [
    "[email protected]"
  ],
  "text": "FYI"
}
'

{
  "data": {
    "record_type": "email_message",
    "id": "44444444-4444-4444-4444-444444444444",
    "status": "queued",
    "from": {
      "email": "[email protected]"
    },
    "to": [
      {
        "email": "[email protected]"
      }
    ],
    "cc": [
      {
        "email": "[email protected]"
      }
    ],
    "bcc": [
      {
        "email": "[email protected]"
      }
    ],
    "reply_to": null,
    "subject": "Fwd: Project update",
    "tags": [],
    "metadata": {},
    "template_id": null,
    "template_variables": {},
    "attachments": [],
    "events": [],
    "created_at": "2026-07-15T12:35:00Z"
  }
}

Authorizations

Authorization

string

header

required

Telnyx API key supplied as Authorization: Bearer <token>. In production, auth may be validated by the API gateway and forwarded via Telnyx auth headers.

Path Parameters

inbox_id

string<uuid>

required

Email inbox UUID.

message_id

string<uuid>

required

Inbound email message UUID.

Body

application/json

required

One recipient or a non-empty recipient array. Each recipient may be an email string or an object with email and optional name.

Minimum string length: 3

Pattern: ^[^\s@]+@[^\s@]+\.[^\s@]+$

One recipient or a recipient array. Each recipient may be an email string or an object with email and optional name.

Minimum string length: 3

Pattern: ^[^\s@]+@[^\s@]+\.[^\s@]+$

bcc

One recipient or a recipient array. Each recipient may be an email string or an object with email and optional name.

Minimum string length: 3

Pattern: ^[^\s@]+@[^\s@]+\.[^\s@]+$

text

string

Optional plain-text note prepended to the generated forwarded-message block. Blank values are treated as omitted.

html

string

Optional HTML note prepended to the generated forwarded-message block. Blank values are treated as omitted.

Response

Forward accepted by the standard email send pipeline.

data

object

required

Show child attributes

suppressed

object[]

Recipients removed by suppression checks when at least one recipient remains and the message is accepted.

Show child attributes

JavaScript

import Telnyx from 'telnyx';

const client = new Telnyx({
  apiKey: process.env['TELNYX_API_KEY'], // This is the default and can be omitted
});

const response = await client.emailInboxes.messages.actions.forward('inbox_id', 'message_id', {
  to: 'to',
});

console.log(response.data);

import os
from telnyx import Telnyx

client = Telnyx(
    api_key=os.environ.get("TELNYX_API_KEY"),  # This is the default and can be omitted
)
response = client.email_inboxes.messages.actions.forward(
    inbox_id="inbox_id",
    message_id="message_id",
    to="to",
)
print(response.data)

package main

import (
	"context"
	"fmt"

	"github.com/team-telnyx/telnyx-go"
	"github.com/team-telnyx/telnyx-go/option"
)

func main() {
	client := telnyx.NewClient(
		option.WithAPIKey("My API Key"),
	)
	response, err := client.EmailInboxes.Messages.Actions.Forward(
		context.TODO(),
		"inbox_id",
		"message_id",
		telnyx.EmailInboxeMessageActionForwardParams{
			To: "to",
		},
	)
	if err != nil {
		panic(err.Error())
	}
	fmt.Printf("%+v\n", response.Data)
}

package com.telnyx.sdk.example;

import com.telnyx.sdk.client.TelnyxClient;
import com.telnyx.sdk.client.okhttp.TelnyxOkHttpClient;
import com.telnyx.sdk.models.emailInboxes.messages.actions.ActionForwardParams;

public final class Main {
    private Main() {}

    public static void main(String[] args) {
        TelnyxClient client = TelnyxOkHttpClient.fromEnv();

        ActionForwardParams params = ActionForwardParams.builder()
            .to("to")
            .build();
        var response = client.emailInboxes().messages().actions().forward("inbox_id", "message_id", params);
    }
}

<?php

require_once dirname(__DIR__) . '/vendor/autoload.php';

use Telnyx\Client;
use Telnyx\Core\Exceptions\APIException;

$client = new Client(apiKey: getenv('TELNYX_API_KEY') ?: 'My API Key');

try {
  $response = $client->emailInboxes->messages->actions->forward(
    'inbox_id',
    'message_id',
    to: 'to',
  );

  var_dump($response);
} catch (APIException $e) {
  echo $e->getMessage();
}

curl --request POST \
  --url https://api.telnyx.com/v2/email_inboxes/{inbox_id}/messages/{message_id}/actions/forward \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "to": "[email protected]",
  "cc": [
    {
      "email": "[email protected]"
    }
  ],
  "bcc": [
    "[email protected]"
  ],
  "text": "FYI"
}
'

{
  "data": {
    "record_type": "email_message",
    "id": "44444444-4444-4444-4444-444444444444",
    "status": "queued",
    "from": {
      "email": "[email protected]"
    },
    "to": [
      {
        "email": "[email protected]"
      }
    ],
    "cc": [
      {
        "email": "[email protected]"
      }
    ],
    "bcc": [
      {
        "email": "[email protected]"
      }
    ],
    "reply_to": null,
    "subject": "Fwd: Project update",
    "tags": [],
    "metadata": {},
    "template_id": null,
    "template_variables": {},
    "attachments": [],
    "events": [],
    "created_at": "2026-07-15T12:35:00Z"
  }
}

Getting Started

Sending Email

Inboxes

Domains & Validation

Deliverability

Templates & Suppression

Events & Webhooks

For AI Agents

Forward an inbox message

Authorizations

Path Parameters

Body

Response