How do I use WhatsApp Business for overseas buyer inquiries? App vs API and what it costs in detail

Dear friend,

Welcome! This letter sets out what you need to know, plainly and in order.

1. Which markets and customers suit WhatsApp

WhatsApp is widely used in Latin America, the Middle East, Europe, South Asia and Africa. It works best for buyers you already have contact with: following up inquiries, confirming orders, sending shipping updates. It is not a cold-outreach tool.

2. How to register

Prepare: a phone number that can receive a code, company name, website or social page; API users also need a payment method. From September 30, 2026, directly integrated businesses must have a payment method on file or Meta stops delivering service messages (A, official pricing notice).

Mainland China companies: we found no official mainland-specific onboarding page. Meta has a category called Solution Providers; verify any provider on Meta's own pages. This page names none. The platform is not directly accessible in mainland China; use it only by lawful means. We do not provide access methods.

3. Day-to-day operation

Business App features (A, official features page):

Channels: not described on the official features page; unverified (see unknowns).

Security: turn on two-step verification, never share verification codes, and beware people posing as official support.

4. Ads and message billing

• Click-to-WhatsApp ads: run in Meta's ad tools. When a user starts a chat from such an ad, a free entry point window of up to 7 days opens; marketing, utility, authentication and service messages are free inside it (A, pricing).
• API billing (per message since July 1, 2025): Meta does not charge for user-to-business messages; you pay for delivered messages. Categories: marketing, utility, authentication (templates) and service (free-form, only within the 24-hour customer service window) (A, same).
• Prices depend on the recipient's country. China (+86) falls under the "Rest of Asia Pacific" regional rate. The October 1, 2026 update raised that region's marketing rate. Exact amounts are in the official rate cards (CSV/PDF, 16 currencies); we do not copy numbers here, please download and check.
• Changes on October 1, 2026: service messages and utility messages sent in reply to users, previously free, become billable; each business number gets 1,000 free service messages a month. Service messages use the same per-market rate as utility and authentication, with no volume tiers (A, official notice).
• Utility and authentication messages have volume-based tiers; marketing does not.
• Meta Business Agent (AI replies) is billed by tokens: $2.00 per million, roughly 4 to 5 US cents per message (A, pricing page).

5. Offers and memberships (checked October 25, 2026)

Credits or promotions: no official page found. Whatever your account dashboard shows is what applies.

6. What results to expect

There is no reliable public average for reply or conversion rates. Test it: log new chats per week, share answered within 24 hours, quotes sent and orders won, for 4 weeks. If most chats come from cold messages and replies are very low, stop; first earn consent via your website, social profiles or ads.

7. Red flags

Policy essentials (A, WhatsApp Business Messaging Policy):

• Contact only people who gave their number and opted in; honor opt-outs and blocks.
• Starting a conversation requires an approved template; after 24 hours from the user's last message, only templates may be sent.
• Blocks and reports lower your quality rating and can limit sending; serious or repeated violations can mean a permanent ban.
• Restricted categories include firearms, alcohol and tobacco, drugs and medical products, adult content, multi-level marketing.
• Do not ask for or share full card or account numbers.

Scam signs: "millions of buyer numbers" lists, bulk-adding or auto-blast software, "never banned" promises, requests for your verification code, account trading. These violate the policy and risk bans; we do not recommend them.

Unknowns

• Exact per-message price for China-recipient messages (official CSV/PDF not read).
• Official WhatsApp monthly users.
• Channels features and limits; Meta Verified (WhatsApp) price per plan.
• Country list and monthly limits for App broadcasts.
• Official onboarding for mainland China businesses; new-advertiser credits.
• The messaging policy page shows no publication date; recheck before relying on it.

Official links

• WhatsApp Business
• Business Platform pricing
• Service message billing notice
• Business Messaging Policy
• WhatsApp Help Center

Sources for this letter

1. DataReportal
2. official page
3. developer docs
4. official pricing notice
5. official features page
6. pricing
7. WhatsApp Help
8. Meta
9. WhatsApp Business Messaging Policy
10. WhatsApp Business
11. WhatsApp Help Center