# Sangdam Talk

The following image shows a sample Sangdam Talk message on KakaoTalk.

## Outbound messages

### Text

| Category | Details |
| --- | --- |
| Content | Text only, single block. Maximum 1,000 characters including spaces, regardless of language. |
| Supported languages | Korean and English |

### Image

To send either an image or an image for linked-type buttons, first upload the image to the Kakao server.

Images must follow the specifications in the following table:

| Specification | Image | Image for linked-type button |
| --- | --- | --- |
| Recommended size | N/A | 720px x 720px |
| Size limit | N/A | Minimum width: 500px. Aspect ratio must be between 2:1 and 3:4. Upload is not allowed otherwise. |
| File format | .jpg, .png, .gif | .jpg, .png |
| Max file size | 5 MB | 0.5 MB |

### Linked-type buttons

You can include a maximum of five buttons in each message. Each button can be of a different type.

| Button name | Purpose | Description |
| --- | --- | --- |
| WL | Web link | Launches a web page either in the KakaoTalk in-app browser or in an external browser if you add the relevant attribute. |
| AL | App link | Runs the KakaoTalk app custom scheme. |
| MD | Message delivery | Sends a text message from the end user containing the button text and the message body. |
| BK | Bot keyword | Sends a text message from the end user containing the button text. |

## Inbound messages

An inbound Sangdam Talk message can consist of the following:

- Text
- Image
- Video
- Audio

Media must follow the specifications in the following table:

| Specification | Image | Video | Audio |
| --- | --- | --- | --- |
| File format | .jpg, .jpeg, .gif, .bmp, .png, .tiff | .mp4, .m4v, .avi, .asf, .wmv, .mkv, .ts, .mpg, .mpeg, .mov, .flv, .ogv | .mp3, .wav, .flac, .tta, .tak, .aac, .wma, .ogg, .m4a |
| Max file size | Mobile: 15 MBPC: 300 MB | 300 MB | PC: 300 MB |
| Max duration | N/A | 5 minutes when recording using KakaoTalk | Mobile: 5 minutes |