Notification > Notification Hub > Console User Guide > Attachments
Manage attachments and image layouts.
You can pre-register and manage files to attach when sending messages.
The retention period for attachments is 7 days. Attachments used in templates are stored until the template is deleted. You can also manage attachments uploaded when registering templates and sending messages.
| Message Channel | Type | File Format | Max File Size | Resolution | Ratio |
|---|---|---|---|---|---|
| SMS | MMS | .jpg, .jpeg | 300KB | Width 1000px, Height 1000px or less | |
| RCS | MMS | .jpg, .jpeg, .png, .gif, .bmp | 1MB | ||
| Alimtalk | Image | .jpg, .png | 500KB | Width 500px or more | (2:1) |
| Alimtalk | Item List | .jpg, .png | 500KB | Width 108px or more | (1:1) |
| - | All formats except .js, .exe, .bat, .cmd, .com, .cpl, .scr, .vbs, .wsr | 30MB |
You can use image layouts to personalize images when sending MMS messages via SMS. An image layout consists of a background image, an image, content, and a barcode. You can use the image layout feature when creating SMS - MMS type templates.
| Type | File Format | Resolution |
|---|---|---|
| Background Image | .jpg, .jpeg | Width 500px, Height 663px |
| Image | .jpg, .jpeg | Width 430px, Height 274px |