Inboxes - Forward Message

curl --request POST \
  --url https://api.aisa.one/apis/v1/agentmail/inboxes/{inbox_id}/messages/{message_id}/forward \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "attachments": [
    {
      "content": "<string>",
      "content_id": "<string>",
      "content_type": "<string>",
      "filename": "<string>",
      "url": "<string>"
    }
  ],
  "bcc": "<string>",
  "cc": "<string>",
  "headers": {},
  "html": "<string>",
  "labels": [
    "<string>"
  ],
  "reply_to": "<string>",
  "subject": "<string>",
  "text": "<string>",
  "to": "<string>",
  "track_opens": true
}
'

import requests

url = "https://api.aisa.one/apis/v1/agentmail/inboxes/{inbox_id}/messages/{message_id}/forward"

payload = {
    "attachments": [
        {
            "content": "<string>",
            "content_id": "<string>",
            "content_type": "<string>",
            "filename": "<string>",
            "url": "<string>"
        }
    ],
    "bcc": "<string>",
    "cc": "<string>",
    "headers": {},
    "html": "<string>",
    "labels": ["<string>"],
    "reply_to": "<string>",
    "subject": "<string>",
    "text": "<string>",
    "to": "<string>",
    "track_opens": True
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    attachments: [
      {
        content: '<string>',
        content_id: '<string>',
        content_type: '<string>',
        filename: '<string>',
        url: '<string>'
      }
    ],
    bcc: '<string>',
    cc: '<string>',
    headers: {},
    html: '<string>',
    labels: ['<string>'],
    reply_to: '<string>',
    subject: '<string>',
    text: '<string>',
    to: '<string>',
    track_opens: true
  })
};

fetch('https://api.aisa.one/apis/v1/agentmail/inboxes/{inbox_id}/messages/{message_id}/forward', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.aisa.one/apis/v1/agentmail/inboxes/{inbox_id}/messages/{message_id}/forward",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'attachments' => [
        [
                'content' => '<string>',
                'content_id' => '<string>',
                'content_type' => '<string>',
                'filename' => '<string>',
                'url' => '<string>'
        ]
    ],
    'bcc' => '<string>',
    'cc' => '<string>',
    'headers' => [
        
    ],
    'html' => '<string>',
    'labels' => [
        '<string>'
    ],
    'reply_to' => '<string>',
    'subject' => '<string>',
    'text' => '<string>',
    'to' => '<string>',
    'track_opens' => true
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.aisa.one/apis/v1/agentmail/inboxes/{inbox_id}/messages/{message_id}/forward"

	payload := strings.NewReader("{\n  \"attachments\": [\n    {\n      \"content\": \"<string>\",\n      \"content_id\": \"<string>\",\n      \"content_type\": \"<string>\",\n      \"filename\": \"<string>\",\n      \"url\": \"<string>\"\n    }\n  ],\n  \"bcc\": \"<string>\",\n  \"cc\": \"<string>\",\n  \"headers\": {},\n  \"html\": \"<string>\",\n  \"labels\": [\n    \"<string>\"\n  ],\n  \"reply_to\": \"<string>\",\n  \"subject\": \"<string>\",\n  \"text\": \"<string>\",\n  \"to\": \"<string>\",\n  \"track_opens\": true\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.aisa.one/apis/v1/agentmail/inboxes/{inbox_id}/messages/{message_id}/forward")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"attachments\": [\n    {\n      \"content\": \"<string>\",\n      \"content_id\": \"<string>\",\n      \"content_type\": \"<string>\",\n      \"filename\": \"<string>\",\n      \"url\": \"<string>\"\n    }\n  ],\n  \"bcc\": \"<string>\",\n  \"cc\": \"<string>\",\n  \"headers\": {},\n  \"html\": \"<string>\",\n  \"labels\": [\n    \"<string>\"\n  ],\n  \"reply_to\": \"<string>\",\n  \"subject\": \"<string>\",\n  \"text\": \"<string>\",\n  \"to\": \"<string>\",\n  \"track_opens\": true\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.aisa.one/apis/v1/agentmail/inboxes/{inbox_id}/messages/{message_id}/forward")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"attachments\": [\n    {\n      \"content\": \"<string>\",\n      \"content_id\": \"<string>\",\n      \"content_type\": \"<string>\",\n      \"filename\": \"<string>\",\n      \"url\": \"<string>\"\n    }\n  ],\n  \"bcc\": \"<string>\",\n  \"cc\": \"<string>\",\n  \"headers\": {},\n  \"html\": \"<string>\",\n  \"labels\": [\n    \"<string>\"\n  ],\n  \"reply_to\": \"<string>\",\n  \"subject\": \"<string>\",\n  \"text\": \"<string>\",\n  \"to\": \"<string>\",\n  \"track_opens\": true\n}"

response = http.request(request)
puts response.read_body

{
  "message_id": "<string>",
  "thread_id": "<string>"
}

POST

https://api.aisa.one

apis

agentmail

inboxes

{inbox_id}

messages

{message_id}

forward

Inboxes - Forward Message

curl --request POST \
  --url https://api.aisa.one/apis/v1/agentmail/inboxes/{inbox_id}/messages/{message_id}/forward \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "attachments": [
    {
      "content": "<string>",
      "content_id": "<string>",
      "content_type": "<string>",
      "filename": "<string>",
      "url": "<string>"
    }
  ],
  "bcc": "<string>",
  "cc": "<string>",
  "headers": {},
  "html": "<string>",
  "labels": [
    "<string>"
  ],
  "reply_to": "<string>",
  "subject": "<string>",
  "text": "<string>",
  "to": "<string>",
  "track_opens": true
}
'

import requests

url = "https://api.aisa.one/apis/v1/agentmail/inboxes/{inbox_id}/messages/{message_id}/forward"

payload = {
    "attachments": [
        {
            "content": "<string>",
            "content_id": "<string>",
            "content_type": "<string>",
            "filename": "<string>",
            "url": "<string>"
        }
    ],
    "bcc": "<string>",
    "cc": "<string>",
    "headers": {},
    "html": "<string>",
    "labels": ["<string>"],
    "reply_to": "<string>",
    "subject": "<string>",
    "text": "<string>",
    "to": "<string>",
    "track_opens": True
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    attachments: [
      {
        content: '<string>',
        content_id: '<string>',
        content_type: '<string>',
        filename: '<string>',
        url: '<string>'
      }
    ],
    bcc: '<string>',
    cc: '<string>',
    headers: {},
    html: '<string>',
    labels: ['<string>'],
    reply_to: '<string>',
    subject: '<string>',
    text: '<string>',
    to: '<string>',
    track_opens: true
  })
};

fetch('https://api.aisa.one/apis/v1/agentmail/inboxes/{inbox_id}/messages/{message_id}/forward', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.aisa.one/apis/v1/agentmail/inboxes/{inbox_id}/messages/{message_id}/forward",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'attachments' => [
        [
                'content' => '<string>',
                'content_id' => '<string>',
                'content_type' => '<string>',
                'filename' => '<string>',
                'url' => '<string>'
        ]
    ],
    'bcc' => '<string>',
    'cc' => '<string>',
    'headers' => [
        
    ],
    'html' => '<string>',
    'labels' => [
        '<string>'
    ],
    'reply_to' => '<string>',
    'subject' => '<string>',
    'text' => '<string>',
    'to' => '<string>',
    'track_opens' => true
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.aisa.one/apis/v1/agentmail/inboxes/{inbox_id}/messages/{message_id}/forward"

	payload := strings.NewReader("{\n  \"attachments\": [\n    {\n      \"content\": \"<string>\",\n      \"content_id\": \"<string>\",\n      \"content_type\": \"<string>\",\n      \"filename\": \"<string>\",\n      \"url\": \"<string>\"\n    }\n  ],\n  \"bcc\": \"<string>\",\n  \"cc\": \"<string>\",\n  \"headers\": {},\n  \"html\": \"<string>\",\n  \"labels\": [\n    \"<string>\"\n  ],\n  \"reply_to\": \"<string>\",\n  \"subject\": \"<string>\",\n  \"text\": \"<string>\",\n  \"to\": \"<string>\",\n  \"track_opens\": true\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.aisa.one/apis/v1/agentmail/inboxes/{inbox_id}/messages/{message_id}/forward")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"attachments\": [\n    {\n      \"content\": \"<string>\",\n      \"content_id\": \"<string>\",\n      \"content_type\": \"<string>\",\n      \"filename\": \"<string>\",\n      \"url\": \"<string>\"\n    }\n  ],\n  \"bcc\": \"<string>\",\n  \"cc\": \"<string>\",\n  \"headers\": {},\n  \"html\": \"<string>\",\n  \"labels\": [\n    \"<string>\"\n  ],\n  \"reply_to\": \"<string>\",\n  \"subject\": \"<string>\",\n  \"text\": \"<string>\",\n  \"to\": \"<string>\",\n  \"track_opens\": true\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.aisa.one/apis/v1/agentmail/inboxes/{inbox_id}/messages/{message_id}/forward")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"attachments\": [\n    {\n      \"content\": \"<string>\",\n      \"content_id\": \"<string>\",\n      \"content_type\": \"<string>\",\n      \"filename\": \"<string>\",\n      \"url\": \"<string>\"\n    }\n  ],\n  \"bcc\": \"<string>\",\n  \"cc\": \"<string>\",\n  \"headers\": {},\n  \"html\": \"<string>\",\n  \"labels\": [\n    \"<string>\"\n  ],\n  \"reply_to\": \"<string>\",\n  \"subject\": \"<string>\",\n  \"text\": \"<string>\",\n  \"to\": \"<string>\",\n  \"track_opens\": true\n}"

response = http.request(request)
puts response.read_body

{
  "message_id": "<string>",
  "thread_id": "<string>"
}

Forwards one message to new recipients and returns message_id and thread_id. 🔴 This sends real email and it cannot be recalled, and it passes along the original content including attachments — check what you are forwarding with get_agentmail_inbox_message first. Every AIsa caller shares one AgentMail account, so this reaches inboxes other callers created. To answer instead of forward, use post_agentmail_inbox_message_reply.

Example

curl -X POST "https://api.aisa.one/apis/v1/agentmail/inboxes/{inbox_id}/messages/{message_id}/forward" \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY"

// Copy this whole block into Claude Code, Codex, Cursor or any coding agent.
// It carries everything needed to connect, authorize and run this example —
// no key to paste, one click of Allow in the browser.
{
  "calls": [
    {
      "call_id": "1",
      "tool": "post_agentmail_inbox_message_forward",
      "arguments": {}
    }
  ]
}
// ── for the agent ─────────────────────────────────────────────────────────
// Register the AIsa MCP server, then call its `batch_quote` tool with the JSON above.
//   name       aisa
//   endpoint   https://mcp.aisa.one/mcp
//   transport  streamable-http
//   auth       OAuth. The server publishes RFC 9728 metadata, so open a
//              browser and the user clicks Allow once — nothing to paste.
//              If AISA_API_KEY is set, send it as a bearer header instead.
// Use your own MCP mechanism, not a hand-edited config file:
//   Codex        codex mcp add aisa --url https://mcp.aisa.one/mcp
//   Claude Code  claude mcp add --transport http -s user aisa https://mcp.aisa.one/mcp
//   Cursor / VS Code   a "url" entry for https://mcp.aisa.one/mcp in the MCP config
// The server reaches https://mcp.aisa.one/servers worth of APIs through a few meta
// tools: search, list_categories, get_details, batch_quote, batch_use.
// search, get_details and batch_quote are free; batch_use is billed per
// call. This operation's full contract — every argument, the response
// shape, the price and the pitfalls — is at
//   https://aisa.one/docs/api-reference/agentmail/post_agentmail-inboxes-inbox-id-messages-message-id-forward.md
// Show me the quoted cost. Once I approve, run the same calls with
// batch_use and show me the result.

First time? Point any MCP client at https://mcp.aisa.one/mcp — Claude Code, Codex, Cursor, VS Code and the rest. Authorization is OAuth: the client opens a browser, you click Allow once, and there is no key to paste. Your agent then reaches every endpoint through a few meta tools: search, list_categories, get_details and batch_quote are free, batch_use is billed per call. Setup per client is in Connect via MCP; the live tool list and what each call costs are on aisa.one/mcp.

Set this endpoint up in your agent →

Request contract

Method and path: POST /apis/v1/agentmail/inboxes/{inbox_id}/messages/{message_id}/forward
Availability: enabled
Request URL template: https://api.aisa.one/apis/v1/agentmail/inboxes/{inbox_id}/messages/{message_id}/forward
inbox_id: path; required
message_id: path; required
Runtime facts: 18a04e28941fae19674c11246b677373368b6bd927b7c146220cec1f168f4639

Complete OpenAPI definition Effective request and pricing declaration (including authentication and referenced schemas):

{
  "operationId": "post_agentmail_inbox_message_forward",
  "method": "POST",
  "path": "/apis/v1/agentmail/inboxes/{inbox_id}/messages/{message_id}/forward",
  "servers": [
    {
      "url": "https://api.aisa.one"
    }
  ],
  "parameters": [
    {
      "in": "path",
      "name": "inbox_id",
      "required": true,
      "schema": {
        "description": "The ID of the inbox.",
        "title": "InboxId",
        "type": "string"
      }
    },
    {
      "in": "path",
      "name": "message_id",
      "required": true,
      "schema": {
        "description": "ID of message.",
        "title": "MessageId",
        "type": "string"
      }
    }
  ],
  "security": [
    {
      "bearerAuth": []
    }
  ],
  "requestBody": {
    "content": {
      "application/json": {
        "schema": {
          "properties": {
            "attachments": {
              "description": "Attachments to include in message.",
              "items": {
                "description": "Provide either `content` or `url` for each attachment.",
                "properties": {
                  "content": {
                    "description": "Base64 encoded content of the attachment. The entire request, including the message body and all attachments, is limited to 6 MB.",
                    "type": "string"
                  },
                  "content_disposition": {
                    "description": "Content disposition of attachment.",
                    "enum": [
                      "inline",
                      "attachment"
                    ],
                    "title": "AttachmentContentDisposition",
                    "type": "string"
                  },
                  "content_id": {
                    "description": "Content ID of attachment.",
                    "title": "AttachmentContentId",
                    "type": "string"
                  },
                  "content_type": {
                    "description": "Content type of attachment.",
                    "title": "AttachmentContentType",
                    "type": "string"
                  },
                  "filename": {
                    "description": "Filename of attachment.",
                    "title": "AttachmentFilename",
                    "type": "string"
                  },
                  "url": {
                    "description": "URL that AgentMail can download without custom authentication headers or cookies.\nRedirects and pre-signed URLs are supported, and the final response must be a\nsuccessful 2xx response. Keep URL-backed attachments around 30 MB total per message.",
                    "type": "string"
                  }
                },
                "title": "SendAttachment",
                "type": "object"
              },
              "title": "SendMessageAttachments",
              "type": "array"
            },
            "bcc": {
              "description": "BCC recipient address or addresses.",
              "oneOf": [
                {
                  "type": "string"
                },
                {
                  "items": {
                    "type": "string"
                  },
                  "type": "array"
                }
              ],
              "title": "SendMessageBcc"
            },
            "cc": {
              "description": "CC recipient address or addresses.",
              "oneOf": [
                {
                  "type": "string"
                },
                {
                  "items": {
                    "type": "string"
                  },
                  "type": "array"
                }
              ],
              "title": "SendMessageCc"
            },
            "headers": {
              "additionalProperties": {
                "type": "string"
              },
              "description": "Headers to include in message.",
              "title": "SendMessageHeaders",
              "type": "object"
            },
            "html": {
              "description": "HTML body of message.",
              "title": "MessageHtml",
              "type": "string"
            },
            "labels": {
              "description": "Labels of message.",
              "items": {
                "type": "string"
              },
              "title": "MessageLabels",
              "type": "array"
            },
            "reply_to": {
              "description": "Reply-to address or addresses.",
              "oneOf": [
                {
                  "type": "string"
                },
                {
                  "items": {
                    "type": "string"
                  },
                  "type": "array"
                }
              ],
              "title": "SendMessageReplyTo"
            },
            "subject": {
              "description": "Subject of message.",
              "title": "MessageSubject",
              "type": "string"
            },
            "text": {
              "description": "Plain text body of message.",
              "title": "MessageText",
              "type": "string"
            },
            "to": {
              "description": "Recipient address or addresses.",
              "oneOf": [
                {
                  "type": "string"
                },
                {
                  "items": {
                    "type": "string"
                  },
                  "type": "array"
                }
              ],
              "title": "SendMessageTo"
            },
            "track_opens": {
              "description": "Track when this message is first opened. Requires a custom domain with tracking enabled and\nan HTML body. Opens surface as the `opened` label on the message and as a `message.opened`\nevent. One pixel is injected per message, not per recipient, so a message with several\nrecipients fires once when any of them opens it, and the event does not identify which one.",
              "title": "TrackOpens",
              "type": "boolean"
            }
          },
          "title": "SendMessageRequest",
          "type": "object"
        }
      }
    }
  },
  "x-aisa-status": "enabled",
  "x-aisa-pricing": {
    "cost_contract": "explicit_zero",
    "customer_pricing": "fixed_success",
    "default_request_estimate_usd": 0.012,
    "estimate_source": "profile_seed",
    "evidence_source": "request_snapshot"
  },
  "components": {
    "securitySchemes": {
      "bearerAuth": {
        "scheme": "bearer",
        "type": "http"
      }
    }
  }
}

Cost and request rules

Published reference price: $0.012 USD per successful request. Account-specific pricing and final settlement may differ. Published reference values are not an account-specific quote or a settled charge. For endpoints supporting X-AISA-Cost-Mode: quote, obtain a free quote for your exact request before execution; reconcile the settled cost with response metadata and Usage Logs. USD amounts use 1,000,000 integer micro-USD per dollar.

Default request reference estimate (USD): 0.012
Cost contract: explicit_zero
Settlement evidence source: request_snapshot

Authorizations

Authorization

string

header

required

Bearer authentication header of the form Bearer <token>, where <token> is your auth token.

Path Parameters

inbox_id

string

required

The ID of the inbox.

message_id

string

required

ID of message.

Body

application/json

attachments

SendAttachment · object[]

Attachments to include in message.

Show child attributes

bcc

BCC recipient address or addresses.

CC recipient address or addresses.

headers

SendMessageHeaders · object

Headers to include in message.

Show child attributes

html

string

HTML body of message.

labels

string[]

Labels of message.

reply_to

Reply-to address or addresses.

subject

string

Subject of message.

text

string

Plain text body of message.

Recipient address or addresses.

track_opens

boolean

Track when this message is first opened. Requires a custom domain with tracking enabled and an HTML body. Opens surface as the opened label on the message and as a message.opened event. One pixel is injected per message, not per recipient, so a message with several recipients fires once when any of them opens it, and the event does not identify which one.

Response

Response with status 200

message_id

string

required

ID of message.

thread_id

string

required

ID of thread.

Overview

Models

Search & Research

Finance & Crypto

Social & Media

SEO & Web Intel

Sales & Email

Travel & Other

Inboxes - Forward Message

Example

Request contract

Cost and request rules

Authorizations

Path Parameters

Body

Response

​Example

​Request contract

​Cost and request rules

Authorizations

Path Parameters

Body

Response

Example

Request contract

Cost and request rules