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💛 Helpful Guide

Choosing + Signing Up for a KakaoTalk BSP

AlimTalk can only be sent through an official Kakao partner (BSP). A comparison of NHN Cloud / Bizppurio / SOLAPI and the sign-up process.

읽는 데 약 6 min

Contents
  1. What is a BSP?
  2. Comparing the 3 providers
  3. Which BSP is right for your clinic?
  4. Sign-up process (common to all BSPs)
  5. The Vercel + IP whitelist trap
  6. Frequently asked questions

What is a BSP?

A BSP (Business Service Provider) is a messaging partner company that has a direct contract with Kakao. Whether you use Coauths CRM or any other system, sending AlimTalk requires going through a BSP's API (Kakao does not provide direct API access).

So the flow is Coauths CRM → BSP API → Kakao → patient's phone.

Comparing the 3 providers

NHN Cloud Bizmessage (Coauths recommended)

  • A major domestic cloud provider. Excellent reliability, documentation, and customer support.
  • Price: contact sales (market average for AlimTalk is 8–9 KRW per message)
  • Eligibility: business registration certificate + strong identity verification (representative, or an employee with a certificate of employment)
  • API: standard REST + Webhook support
  • Note: SMS token verification is required when registering a sender profile

Bizppurio

  • Specialized in healthcare and e-commerce. Strong track record getting medical templates approved.
  • Price: contact sales
  • Eligibility: similar to NHN
  • Note: IP whitelist registration is mandatory — if you use Vercel you will need a separate worker server (see §The Vercel + IP whitelist trap below)

SOLAPI (솔라피)

  • You can start right after signing up. Pricing is published openly.
  • Price: 13 KRW per AlimTalk (volume discounts available). HMAC signature method, no IP whitelist required.
  • Eligibility: business registration certificate alone is enough (simple identity verification)
  • Note: the highest per-message price, but the fastest to get started. A good fit for smaller clinics.

Which BSP is right for your clinic?

  • Sending 1,000–5,000 messages/month + want a fast start → SOLAPI
    (13 × 5,000 = 65,000 KRW/month. No sales process.)
  • 10,000+ messages/month + open to negotiating price → NHN Cloud or Bizppurio (compare sales quotes)
  • Medical AlimTalk templates frequently rejected in review → Bizppurio (healthcare expertise)
  • Using only Vercel with no separate server → SOLAPI or NHN Cloud (avoid Bizppurio's IP whitelist)
💡 BSPs are hard to change mid-stream (templateCode and senderKey are tied to the BSP). Choose carefully from the start.

Sign-up process (common to all BSPs)

  1. Go to the BSP site → business account registration (not a personal account)
  2. Identity verification (varies by BSP):
    • Representative identity verification + business registration certificate upload (most common)
    • If an employee signs up: add a certificate of employment
  3. Activate the KakaoTalk Bizmessage service
  4. Register a payment method:
    • Prepaid — top up at least 10,000 KRW before use
    • Monthly card billing is also available (depending on the BSP)
  5. (Bizppurio) Register the IP whitelist
  6. Sign-up complete → ready to issue API credentials
Screenshot: BSP business account registration form

The Vercel + IP whitelist trap

Vercel does not provide a static IP. As a result, a BSP that requires an IP whitelist, such as Bizppurio, cannot be called from Vercel alone.

How to solve it

  • Choose a different BSP — NHN Cloud and SOLAPI do not require an IP whitelist
  • Run a separate worker server:
    • Render / Railway / fly.io / PM2 and other hosting with a static IP
    • Register this server's IP on Bizppurio's whitelist
    • Coauths CRM calls Bizppurio through this server
The default Coauths CRM setup runs on Vercel. Using Bizppurio adds extra infrastructure cost and operational complexity, so decide carefully.

Frequently asked questions

Q. Can I send AlimTalk immediately after signing up?

No. After signing up you still need to register a sender profile (senderKey) + register templates + pass Kakao's review, which takes an additional 2–3 business days.

Q. NHN Cloud identity verification keeps failing

A stricter pre-registration policy has applied since 2023. Your identity verification details (name and mobile number) must match across both the carrier and NHN. The registered owner of the phone number must complete the verification.

Q. SOLAPI's rate looks expensive — can it be negotiated?

For high volume (10,000+ messages/month) you can get a separate quote. Contact the SOLAPI sales team. The published rate is for low-volume users.

Q. What's next?

  1. Register a sender profile (senderKey) — after completing both the BSP sign-up and the business channel
  2. Write + get AlimTalk templates approved
  3. The actual integration steps in the KakaoTalk connection guide

📍 If you get stuck choosing a BSP, a Coauths representative can give you a recommendation.