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Learn about WhatsApp deliverability, including the factors that play a role in message delivery and reasons why your messages may not be delivered.

Before you begin

Before getting started with sending WhatsApp messages in Klaviyo, you must have a Meta Business Manager and a WhatsApp Business App Account.

WhatsApp message delivery

• Delivery vs. deliverability

There are a number of factors that play a role in whether your WhatsApp messages are successfully delivered to recipients.

Number verification

Before sending messages, you’ll need set up a WhatsApp Business account and go through Meta's onboarding process.

Unlike SMS, Klaviyo does not assign WhatsApp numbers on your behalf. It is recommended to use the same number your brand uses to respond to support calls.

If you already have a verified WhatsApp number, you can migrate it to your Klaviyo account when integrating your WhatsApp Business Account with Klaviyo. If you don’t have a verified WhatsApp number yet and don’t want to use your business support number, you can get a number directly from Meta for free or purchase a number from Twilio, or Infobip.

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You should not use your SMS sending numbers in Klaviyo for WhatsApp.

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WhatsApp numbers have the following requirements; the number must:

• Be owned by your business.
• Have a country and area code.
• Be able to receive voice calls and text messages.
  • It cannot be a short code.
• Be accessible during account setup to receive verification codes.
• Not be used with any other WhatsApp account (business or personal) unless currently being migrated.

Message limits

Each sender on WhatsApp has message limits that control how many conversations you can initiate within a 24-hour period. Once you reach your account limit, you will no longer be able to initiate additional conversations until at least 1 active conversation has ended.