This page describes the supported messaging apps content types, along with their character limits
Supported Content Types by Channel
| Channel | Channel type value | Text | Template | Image | Video | Button | File | Location |
|---|---|---|---|---|---|---|---|---|
| SMS | sms | ✅ | ❌ | ❌ | ❌ | ❌ | ❌ | ❌ |
whatsapp | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | |
| Viber | viber | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ❌ |
| Zalo Notification Service | ZaloNotification | ✅ | ✅ | ✅ | ❌ | ✅ | ❌ | ❌ |
| LINE Official Notification | LineNotification | ✅ | ✅ | ❌ | ❌ | ✅ | ❌ | ❌ |
| Google RCS | GoogleRCS | ✅ | ❌ | ✅ | ✅ | ❌ | ✅ | ❌ |
Whatsapp
- Whatsapp requires templates to be approved before they can be sent as a business-initiated message. However, for replies to customer-initiated conversations, templates are not mandatory and freeform text is supported.
- Supported File formats are:
| File Type | File Formats | Max File Size |
|---|---|---|
| Document | .pdf, .doc, .docx, .xls, .xlsx, .ppt, .pptx, .txt | 100 MB |
| Image | .jpeg, .png | 5 MB |
| Audio | .aac, .m4a, .amr, .mp3, .ogg, .opus | 16 MB |
| Video | .mp4, .3gp | 16 MB |
Character Limit
| Component | Character Limit |
|---|---|
| Text Message | 4,096 |
| Interactive Message Button Title | 20 |
| Interactive Message List Button | 20 |
| Interactive Message List Row Title | 24 |
| Interactive Message List Row Description | 72 |
| Interactive Message List Section Title | 24 |
| Template Header (text type) | 60 |
| Template Body (with other components) | 1,024 |
| Footer (various message types, for example opt-out instructions) | 60 |
| Media Message Image Caption | 1,024 |
| Flows Message CTA | 20 |
Viber
- Viber templates are only available in Russia, Ukraine, and Belarus.
- Supported File formats are:
| File Type | File Formats | Max File Size |
|---|---|---|
| Image | .png, .jpg, .gif | 1 MB |
| Video | .mp4 (recommended), .3gp | 200 MB |
| .pdf, .xps, .pdax, .eps | 200 MB | |
| Documents | .doc, .docx, .rtf, .dot, .dotx, .odt ,odf, .fodt, .txt, .info | 200 MB |
| Spreadsheet | .xls, .xlsx, .ods, .fods, .csv, .xlsm, .xltx | 200 MB |
Character Limit
| Component | Character Limit |
|---|---|
| Text Body | 1,000 |
| Button Label | 30 |
Zalo Notification Service
- Zalo Notification Service (ZNS) is strictly for one-way messaging and requires templates to be approved before they can be sent.
- ZNS template's character limit is 400 characters
LINE Official Notification
- LINE Official Notification (LON) is strictly for one-way messaging and requires templates to be approved before they can be sent.
- LON template's character limit is 500 characters