WhatsApp Marketing API

Launch opted-in bulk WhatsApp campaigns through one API.

Send bulk WhatsApp marketing messages for product launches, seasonal offers, promotions, and re-engagement with approved templates, transparent country pricing, and delivery tracking.

For growth, lifecycle, e-commerce, and engineering teams building permission-based bulk WhatsApp campaigns.

Start for free See how it works

No monthly minimums
Delivery-based billing
Direct engineer support

Wevlix API

Meta WhatsApp Cloud API

Delivered

Confirm opt-in

Send only to customers who have agreed to receive WhatsApp marketing from your business.

Choose a template

Select an approved marketing template and provide the relevant campaign variables.

Send and measure

Launch through the API, then follow message delivery in logs or webhooks.

status: delivered1.8s

Use cases

Bulk campaigns designed for a high-attention channel.

Reach customers who have opted in with timely, relevant messages that respect Meta's template and messaging rules.

Product launches

Introduce new products, features, or availability to customers who asked to hear from your business.

Seasonal promotions

Send approved offers around holidays, events, and limited-time commercial moments.

Re-engagement

Reconnect with opted-in customers using relevant reminders, replenishment prompts, or win-back offers.

Commerce campaigns

Share catalog highlights, restock announcements, and promotion links through approved templates.

Why Wevlix

Campaign infrastructure with clear rules and costs.

Marketing template delivery

Send Meta-approved marketing templates with variables for relevant customer and offer details.

Scale without a monthly plan

Send bulk marketing messages from one prepaid account, without subscriptions or monthly commitments.

Logs and delivery webhooks

Monitor delivery state in the dashboard or feed message events into your campaign reporting systems.

Developer workflow

From customer permission to campaign delivery.

1
Confirm opt-in
Send only to customers who have agreed to receive WhatsApp marketing from your business.
2
Choose a template
Select an approved marketing template and provide the relevant campaign variables.
3
Send and measure
Launch through the API, then follow message delivery in logs or webhooks.

cURL

Trigger an approved campaign template.

Your backend selects the recipient, approved template, and campaign variables.

curl -X POST "https://api.wevlix.com/v1/messages/template" \
  -H "X-API-Key: $WEVLIX_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "to": "+14155550000",
    "templateId": "{wevlix_template_id}",
    "components": [{
      "type": "body",
      "parameters": [
        { "type": "text", "text": "20%" },
        { "type": "text", "text": "Sunday" }
      ]
    }],
    "clientMessageId": "summer_launch_2026"
  }'

Pricing

Pay only for what you deliver.

Transparent per-message rates that drop automatically as you scale. Not plans, not subscriptions, just honest pricing.

See your exact price before you send

Destination/region

Message type

Monthly volume

1,000messages

10k

50k

100k

200k

300k

Select your destination or region above to calculate your exact price.

Pay only for delivered messages. Failed sends are free.

Volume discounts

Select a destination or region to see volume pricing.

Sending more than 1M monthly? Talk to us about custom enterprise rates.

FAQ

Common questions, clear answers.

What is a WhatsApp marketing API?

A WhatsApp marketing API lets your systems send approved bulk promotional messages to customers who have opted in. It is used for campaigns such as product launches, seasonal offers, commerce promotions, and re-engagement.

Do customers need to opt in?

Yes. Businesses should obtain clear permission before sending WhatsApp marketing messages and provide an easy way for customers to opt out. Your campaigns must also follow Meta's messaging and template policies.

What is the difference between marketing and utility messages?

Marketing messages promote products, offers, or engagement. Utility messages provide non-promotional information tied to a transaction, account, or customer request. Meta categorizes and prices the templates separately.

How are WhatsApp marketing campaigns priced?

The price depends on the recipient's destination and Meta's marketing category rate. Wevlix uses transparent prepaid pricing with no subscription or monthly minimum and charges only for delivered messages.

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WhatsApp Utility Messages API

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