Choosing a WhatsApp Gateway Plan: Numbers, Messages and Limits

The way most businesses pick a gateway plan is to look at three tiers, pick the middle one and hope. It works until the 28th of the month, when a festival campaign uses up the message cap and your order confirmations stop going out.

Plan limits aren't hidden tricks. They're a fair way for a vendor to price usage. But you need to know which limits your plan has and which of your activities eat into them. A little arithmetic beforehand saves a lot of awkward Mondays.

What plans usually limit

Different gateways cap different things, so read the plan page, not just the price. Common limits include the number of WhatsApp numbers you can connect, the messages you can send per month, the number of team members, and sometimes API access or the number of contacts.

WA Getway uses plans with usage limits, such as the number of connected numbers and messages per month, set per business. Look at the current plan details before deciding, because we'd rather you check than rely on a blog post that may be out of date.

Count your numbers honestly

Start with how many WhatsApp numbers you need. Not how many you have lying around, but how many have a job. A branch-wise business might need one per branch. A business that separates marketing from service messages needs at least two.

Then add a spare. Numbers drop, get restricted or need replacing, and having headroom for one extra is cheaper than upgrading in a hurry. Our post on managing multiple numbers in one dashboard explains how to give each number a clear role.

Estimate monthly messages with a worked example

Here's an illustrative example, not a benchmark. Say you run a clinic with 400 appointments a month. Each appointment gets a confirmation, a reminder and perhaps a follow-up, so that's about three messages. Add replies from your side, say one for every four patients.

1. 1List every message type you send: confirmations, reminders, receipts, campaigns, auto-replies.
2. 2Estimate how many of each in a typical month.
3. 3Multiply to get a base number.
4. 4Add the replies your team will send by hand.
5. 5Add a buffer for retries and the odd resend, perhaps a fifth on top as a rough rule of thumb.
6. 6Add your biggest planned campaign on top, as a separate line.

That last line is what catches people. Everyday messages are steady and predictable. A single campaign to 5,000 contacts can be bigger than the rest of the month combined. Plan for your peak month, not your average one.

Ask what happens at the limit

• Do messages stop, queue up or get billed extra when you reach the cap?
• Does the cap reset on a calendar month or on your billing date?
• Can you upgrade mid-month, and does it apply straight away?
• Do incoming messages and replies count, or only the ones you send?
• Do failed or retried messages count against the limit?

The first question matters most. If hitting the limit stops all sending, then the plan you choose must keep a safety margin for transactional messages. Nothing is worse than a customer waiting for an OTP that was blocked by a marketing campaign. Some businesses separate those onto different numbers for this reason.

Costs outside the plan

On the official Meta Cloud API route, Meta has its own charges for certain categories of conversation or message. Those are separate from any gateway plan. Meta's pricing changes from time to time, so we won't quote figures. Read our plain-language explainer on WhatsApp business pricing and then check Meta's current pricing page for your country.

Factor in your own staff time too. A cheaper plan that needs a person to babysit it every day isn't cheaper.

Start small, but not too small

It's usually fine to start on a smaller plan and upgrade once real numbers come in, as long as upgrading is easy and doesn't interrupt sending. After the first full month, compare your estimate with the actual usage and adjust. You'll probably be wrong by a wide margin the first time, and that's normal.

If you're still comparing vendors, our buyer's checklist for choosing a gateway lists the other questions to ask. And if your usage doesn't fit any standard tier, a high-volume sender or a multi-branch business with unusual needs, tell us on the contact page and we'll talk through what makes sense.