One of the most confusing parts of WhatsApp Business API is that Meta doesn't charge a flat per-message rate — it charges per conversation, and the rate depends on which category the conversation falls into. Understanding this changes how you plan campaigns.
Utility — transactional, expected messages tied to something the customer already did: order confirmations, shipping updates, appointment reminders. These are the cheapest category and the one most businesses use the most.
Marketing — promotions, offers, re-engagement messages, product announcements. This is the most expensive category, because it's the one Meta wants businesses to use thoughtfully rather than as a spam channel.
Authentication — one-time passwords and login verification codes, sent via a specific Meta-approved template format.
Service — free-form replies you send within 24 hours of a customer messaging you first. These don't use a template and are typically the cheapest or free, since the customer initiated contact.
A conversation is a 24-hour window, not a single message. Once you open a conversation in a given category (say, by sending one utility template), every message you exchange with that customer for the next 24 hours falls under that same conversation — you're not charged again per individual message within the window. This is why a chatty back-and-forth with a customer after an order update often costs the same as sending just the one update.
Most plans, including OneClickMsg's, include a monthly allowance of free utility conversations before Meta's charges apply. If your business is primarily sending transactional messages — order confirmations, delivery updates, appointment reminders — a meaningful share of your monthly traffic can land inside that free allowance, meaning your real out-of-pocket conversation cost stays close to zero until volume grows past it. Marketing-category conversations typically aren't covered by the free allowance, since they're the category Meta prices to encourage restraint.
A business sending mostly order updates and delivery notifications (utility) will spend far less than one running frequent promotional broadcasts (marketing) — even at identical message volume. If your use case is transactional, most of your traffic likely fits within a plan's free utility-message allowance before you touch conversation charges at all.
Say you run an online store sending a shipping confirmation to every order. That's a utility conversation per order — cheap, and often covered entirely by your plan's free monthly utility allowance if your order volume is moderate. Now say you also send a monthly "flash sale" broadcast to your full contact list of, say, a few thousand people. That's a marketing conversation per recipient, at the higher marketing rate, and it's a separate cost from your transactional messaging. Planning your budget means estimating these two buckets separately, not assuming one flat "per message" number covers everything.
Segment marketing broadcasts by contact tags or groups instead of blasting your entire list every time — a smaller, more relevant audience costs less per campaign and tends to see better engagement. Let genuine customer replies open service-category windows instead of re-sending a fresh template unnecessarily. And keep your opt-out list current — sending marketing conversations to contacts who've already disengaged or opted out is pure wasted spend on top of being a compliance problem.
OneClickMsg operates as a Meta Tech Provider, which means Meta's conversation charges are billed directly to your own WhatsApp Business Account rather than marked up and resold through us. You pay OneClickMsg a flat platform fee for the dashboard, template manager, automation, and reporting tools — the conversation-category pricing above is what Meta itself charges on top of that, transparently, on your own account.
Before choosing a plan, map out what you'll actually be sending. Order confirmations and delivery updates? You're mostly in the cheap utility bucket. Running weekly sale announcements to your full contact list? Budget more carefully for marketing-category costs. See real plan numbers in our pricing guide.
Q: Does replying to a customer within 24 hours cost extra? A: No — service conversations (your free-form replies within 24 hours of a customer messaging first) are the cheapest category, since the customer initiated contact.
Q: What happens if I send a marketing message and the customer replies? A: Their reply opens a service-category window for your responses, separate from the marketing conversation that was already billed.
Q: Can I see which category each message fell into after sending? A: Yes — a proper dashboard should show a delivery and campaign report broken down by category and error code, so you can see exactly where your spend went, not just a lump total.
Q: Does an automated chatbot reply count as a new conversation? A: An automated reply sent within an already-open 24-hour window doesn't open a new billable conversation — it's only the first message that opens a window in a given category.