---
title: "Supported Features on Channels"
description: "Comprehensive reference for supported features, message types, and limitations across all Chatwoot channels"
---

## Supported message type

| Channel   | Incoming/Outgoing message | Activity message |
| --------- | ------------------------- | ---------------- |
| Website   | Yes                       | Yes              |
| Facebook  | Yes                       | Yes              |
| Instagram | Yes                       | Yes              |
| SMS       | Yes                       | Yes              |
| Whatsapp  | Yes                       | Yes              |
| Email     | Yes                       | Yes              |
| Telegram  | Yes                       | Yes              |
| Line      | Yes                       | Yes              |
| API       | Yes                       | Yes              |

## Maximum message size (number of characters)

| Channel            | Maximum message size |
| ------------------ | -------------------- |
| Website            | 10,000               |
| Facebook           | 2000                 |
| Instagram          | 1000                 |
| Twilio SMS         | 320                  |
| Twilio WhatsApp    | 1600                 |
| Whatsapp Cloud     | 4096                 |
| 360Dialog WhatsApp | 1600                 |
| Bandwidth SMS      | 160                  |
| Email              | 25,000               |
| Telegram           | 4096                 |
| Line               | 2000                 |
| API                | 10,000               |

## Outbound conversation restriction

| Channel   | Restriction                                                                                                     |
| --------- | --------------------------------------------------------------------------------------------------------------- |
| Website   | You can create outbound conversations to verified contacts                                                      |
| Facebook  | Cannot create outbound conversations. First message should be from the contact                                  |
| Instagram | Cannot create outbound conversations. First message should be from the contact                                  |
| SMS       | No restriction                                                                                                  |
| Whatsapp  | Cannot send any message other than Whatsapp approved template messages 24 hours after the last incoming message |
| Email     | No restriction                                                                                                  |
| Telegram  | Cannot create outbound conversations. First message should be from the contact                                  |
| Line      | Cannot create outbound conversations. First message should be from the contact                                  |
| API       | No restriction                                                                                                  |

## Outgoing message restriction

| Channel   | Restriction                                                                                                     |
| --------- | --------------------------------------------------------------------------------------------------------------- |
| Website   | No restriction                                                                                                  |
| Facebook  | Cannot send promotional messages 24 hours after the last incoming message (7 days if Human agent enabled)       |
| Instagram | Cannot send promotional messages 24 hours after the last incoming message (7 days if Human agent enabled)       |
| Whatsapp  | Cannot send any message other than Whatsapp approved template messages 24 hours after the last incoming message |
| SMS       | No restriction                                                                                                  |
| Email     | No restriction                                                                                                  |
| Telegram  | No restriction                                                                                                  |
| Line      | No restriction                                                                                                  |
| API       | Custom time depends on Agent reply time window                                                                  |

## Outgoing message delivery status

| Channel            | Sent status | Read status   | Delivered status | Failed status |
| ------------------ | ----------- | ------------- | ---------------- | ------------- |
| Website            | Yes         | Yes           | Yes              | Yes           |
| API                | Yes         | Yes           | Yes              | Yes           |
| Official WhatsApp  | Yes         | Yes           | Yes              | Yes           |
| Twilio WhatsApp    | Yes         | Yes           | Yes              | Yes           |
| 360Dialog WhatsApp | Yes         | Yes           | Yes              | Yes           |
| Twilio SMS         | Yes         | Yes           | Not supported    | Yes           |
| Bandwidth SMS      | Yes         | Yes           | Not supported    | Yes           |
| Facebook           | Yes         | Yes           | Yes              | Yes           |
| Instagram          | Yes         | Not supported | Yes              | Yes           |
| Line               | Yes         | Not supported | Not supported    | Yes           |
| Telegram           | Yes         | Not supported | Not supported    | Yes           |
| Email              | Yes         | Not supported | Not supported    | Not supported |

## Reply to message

| Channel         | Reply to incoming message | Reply to outgoing message |
| --------------- | ------------------------- | ------------------------- |
| Website         | Yes                       | Yes                       |
| Facebook        | Yes                       | No                        |
| Instagram       | Yes                       | No                        |
| SMS             | No                        | No                        |
| Whatsapp Cloud  | Yes                       | Yes                       |
| Twilio WhatsApp | No                        | No                        |
| Email           | No                        | No                        |
| Telegram        | Yes                       | Yes                       |
| Line            | No                        | No                        |
| API             | Yes                       | Yes                       |

## Outgoing attachments supported file types

<Note>
The default maximum file size limit is 40MB.
</Note>

| Channel         | Audio                     | Image                | Video                          | Document      |
| --------------- | ------------------------- | -------------------- | ------------------------------ | ------------- |
| Website         | All                       | All                  | All                            | All           |
| Instagram       | aac, m4a, wav, mp4 (25mb) | png, jpeg, gif (8mb) | mp4, ogg, avi, mov, web (25mb) | Not supported |
| Facebook        | All                       | All                  | All                            | All           |
| WhatsApp Cloud  | All                       | All                  | All                            | All           |
| WhatsApp Twilio | mpeg, opus, ogg, amr(5mb) | png, jpeg (5mb)      | mp4 (5mb)                      | pdf (5mb)     |
| Email           | All                       | All                  | All                            | All           |
| Telegram        | All                       | All                  | All                            | All           |
| Line            | Not supported             | png, jpeg            | mp4                            | Not supported |
| API             | All                       | All                  | All                            | All           |

<Note>
"All" means the channel supports all standard file types listed below:

**Standard File Types**

- **Video:** `ogg`, `mp4`, `mov`, `webm`, `quicktime`, `avi`
- **Audio:** `mp3`, `mpeg`, `opus`, `ogg`, `amr`, `aac`, `m4a`, `wav`
- **Image:** `png`, `jpeg`, `gif`, `bmp`, `webp`
- **Document:** `pdf`, `doc`, `docx`, `xls`, `xlsx`, `ppt`, `pptx`, `zip`, `7z`, `rar`, `tar`, `xml`, `csv`, `json`, `rtf`, `txt`, `plain`, `.3gpp`, `x-7z-compressed`, `vnd.rar`, `x-tar`, `msword`
</Note>

## Available features

| Channel   | Channel greeting | Attachments | Agent Auto assignment | Slack |
| --------- | ---------------- | ----------- | --------------------- | ----- |
| Website   | Yes              | Yes         | Yes                   | Yes   |
| Facebook  | Yes              | Yes         | Yes                   | Yes   |
| Instagram | Yes              | Yes         | Yes                   | Yes   |
| SMS       | Yes              | No          | Yes                   | Yes   |
| Whatsapp  | Yes              | Yes         | Yes                   | Yes   |
| Email     | Yes              | Yes         | Yes                   | Yes   |
| Telegram  | Yes              | Yes         | Yes                   | Yes   |
| Line      | Yes              | No          | Yes                   | Yes   |
| API       | Yes              | Yes         | Yes                   | Yes   | 