> ## Documentation Index
> Fetch the complete documentation index at: https://docs.goeva.ai/llms.txt
> Use this file to discover all available pages before exploring further.
# What sending campaigns costs
> Who charges what when you send a message to a list on WhatsApp, how much each Meta category costs, and what Eva takes from your credits.
A WhatsApp send to a list is charged by two different parties. Meta charges every template message it delivers, by category and by the country of the person receiving it. Eva takes credits from your plan.
## What you will get
You will be able to estimate what a campaign costs before sending it. And you will know which part of that cost belongs to Meta and which part belongs to Eva.
## Meta's categories
Meta files every template under a category and prices that category, country by country. The category is proposed by whoever writes the template and approved by Meta.
| Category | Which messages belong here | Example |
| -------------- | -------------------------------------------------------------- | -------------------------------------- |
| Marketing | Promotions, news, invitations, cart reminders | "20% off the whole store until Sunday" |
| Utility | Updates about something the person already bought or requested | "Your order 1043 is out for delivery" |
| Authentication | One-time verification codes | "Your code is 4821" |
| Service | Replies inside a conversation the person opened | The agent's answer to a question |
Marketing is the most expensive category in nearly every country. Utility and authentication cost considerably less.
## The 24-hour window
When a person writes to you, a 24-hour window opens, and each new message from them restarts it. Inside that window the conversation flows freely: the agent replies without a template.
Outside the window, WhatsApp only lets approved templates through, and those are charged. That is why a campaign to people who have not written today always goes through a template.
Meta announced two changes for October 1, 2026: it will start charging for service messages, with one thousand free per month per number, and also for utility messages sent inside the 24-hour window. Checked on September 10, 2026.
## An example with numbers
Eva estimates the cost with a rate per delivered message. For Mexico, the rate it uses today is 0.0305 dollars per marketing message and 0.0085 per utility message. Verified on September 10, 2026.
A marketing campaign to 500 people in Mexico comes to about 15.25 dollars. The same campaign as utility would come to about 4.25.
The official rates, country by country, are on [Meta's WhatsApp pricing page](https://developers.facebook.com/documentation/business-messaging/whatsapp/pricing). Marketing in Mexico goes to 0.0397 dollars on October 1, 2026.
Before you confirm a send, Eva shows how many people it will reach and the estimated cost in your workspace currency. That number comes from the real list, with the excluded people already removed.
## What Eva charges
Eva charges 1 credit for every 10 campaign messages WhatsApp accepts for sending; the assistant's replies use normal credits.
Messages WhatsApp rejects at send time spend no credits. An accepted message that never reaches the phone still counts, because Eva already sent it. Meta's charge for the template arrives separately, on your WhatsApp Business account invoice.
## Next steps
* [How to send a message to a list of people](/en/automations/campaigns)
* [Why your send reaches fewer people than you have](/en/automations/who-receives-it)
* [How much usage you have this month](/en/team/usage)