Channel selection guide
Answer the questions below in order and you will get a channel recommendation that fits your situation.
Channel selector
Q1
Is the recipient an international number?
Full channel comparison
| Channel | Strengths | Weaknesses / cautions |
|---|---|---|
| SMS/LMS/MMS | Works regardless of device or app, highest delivery rate | Limited UI; a toll-free opt-out 080 number is mandatory for promotional sends under Korean regulations |
| Alimtalk | Kakao brand trust, failover available | Templates must be reviewed in advance, and only users with KakaoTalk installed can receive it |
| Brand Message | Images and buttons, a Kakao-based promotional channel | Requires both KakaoTalk installed and consent to receive promotional messages |
| CS Talk | Supports real-time 1:1 responses | No failover, requires staffed agents |
| RCS | Rich UI (images, buttons, brand logo) | Device support varies |
| International SMS | Broad reach for overseas numbers | Higher unit price, failover must be built separately |